Open Bug 1058058 Opened 5 years ago Updated Last month

Popup menus stop working in Firefox UI and on all web pages with X11

Categories

(Firefox :: Menus, defect)

43 Branch
x86_64
Linux
defect
Not set

Tracking

()

UNCONFIRMED

People

(Reporter: wakeupnow, Unassigned, NeedInfo)

References

Details

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0 (Beta/Release)
Build ID: 20140608211457

Steps to reproduce:

This happens intermittently, so there is no specific steps to reproduce it.



Actual results:

Popup menus stop working in Firefox UI and on all web pages.
The popup menu for Firefox, ie system menu does not appear when I click on the firefox file menus.

On web sites, popup menus like dropdown list etc also stop appearing when clicked on.

Basically, anything that is a popup menu stop appearing.

Note: this is not referring to popup windows.


Expected results:

Popup menus should appear when its control ui is clicked on.
Maybe a graphics issue.
Can you paste the "graphics" section from about:support please.
Did you try to test with a clean profile or reinstall FF?
Flags: needinfo?(wakeupnow)
Thanks for the follow-up.
Here's the info from about:support on "graphics"

Graphics
Adapter Description	Intel Open Source Technology Center -- Mesa DRI Intel(R) Haswell Mobile
Device ID	Mesa DRI Intel(R) Haswell Mobile
Driver Version	3.0 Mesa 9.2.1
GPU Accelerated Windows	0/3 Basic
Vendor ID	Intel Open Source Technology Center
WebGL Renderer	Intel Open Source Technology Center -- Mesa DRI Intel(R) Haswell Mobile
windowLayerManagerRemote	false
AzureCanvasBackend	cairo
AzureContentBackend	cairo
AzureFallbackCanvasBackend	none
AzureSkiaAccelerated	0
Flags: needinfo?(wakeupnow)
Here's the info for plugins:

Extensions
Name 	Version 	Enabled 	ID
Auto Dial	10	true	auto.dial@agadak.net
Download YouTube Videos as MP4	1.7.25	true	{b9bfaf1c-a63f-47cd-8b9a-29526ced9060}
DownThemAll!	2.0.17	true	{DDC359D1-844A-42a7-9AA1-88A850A938A8}
Flashblock	1.5.17	true	{3d7eb24f-2740-49df-8937-200b1cc08f8a}
Image Preview	0.0.7	true	{D0A81AC1-3B12-4cec-AA8D-40EBDC4241EA}
Imgur Uploader	1.0.6	true	giorgio@gilestro.tk
LastPass	3.1.1	true	support@lastpass.com
Locationbar²	1.0.6	true	locationbar2@design-noir.de
NicoFox	1.0b5	true	nicofox@littlebtc
NoScript	2.6.8.36	true	{73a6fe31-595d-460b-a920-fcc0f8843232}
Personal Menu	6.2.0	true	CompactMenuCE@Merci.chao
Right Links	0.3.8.4	true	{B5F5E8D3-AE31-49A1-AC42-78B7B1CC5CDC}
Session Manager	0.8.1.5	true	{1280606b-2510-4fe0-97ef-9b5a22eafe30}
Tab Control	0.5.5	true	{39952c40-5197-11da-8cd6-0800200c9a66}
Tile Tabs	11.11	true	tiletabs@DW-dev
UnloadTab	0.24.7	true	unloadtab@firefox.ext
User Agent Switcher	0.7.3	true	{e968fc70-8f95-4ab9-9e79-304de2a71ee1}

Compact Menu 2	4.3.1	false	{57068FBE-1506-42ee-AB02-BD183E7999E4}
Mint Search Enhancer	1.0	false	mint-search-enhancer@linuxmint.com
Stylish	1.0.7	false	{46551EC9-40F0-4e47-8E18-8E5CF550CFB8}
Tab Mix Plus	0.4.1.4	false	{dc572301-7619-498c-a57d-39143191b318}
Wow, you have a bunch of add-ons! Honestly, the culprit is probably here.
Maybe you can test in safe mode (even if surfing in safe mode is not always nicely, https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode) or disable add-on one by one in normal mode.
Hmmm ... but I have an identical set in a Windows 7 machine synced through firefox sync and it does not have this problem.

I have created a bare new profile and will run the other instance concurrent and see if that hits this bug or not.
Anyway, you can try to reset your profile on Linux (Firefox keeps the folder of your current profile you reset), so your private data are imported without the add-ons and prefs.
https://support.mozilla.org/en-US/kb/reset-firefox-to-fix-most-problems
Starting from this "new" profile, you can add your add-ons one by one.
While I am trying the separate new profile to make sure a fresh profile does not have the same problem.  Resetting firefox to fix this problem is like asking people to reinstall Windows when there is a crash, and slowly reinstall all the apps to find out which one broke.

Since plugin seems to be the one major bug source, perhaps firefox can have a plugin install history or a restore point, where users can roll back to an earlier state.

This would at the same time help isolate the buggy plugin and also temporarily resolve the problem for the user as well.

Meanwhile, I'm having two different instance of firefox running the two profiles and trying to have identical web sites run on both.
After disabling "Right Links", the problem seem to have gone away in the normal profile.  Needless to say, the clean empty profile did not have any problems too.

Right Links	0.3.8.4	true	{B5F5E8D3-AE31-49A1-AC42-78B7B1CC5CDC}

Right Links is a plugin that allows links to open with a right click.  Can this be breaking the popup menus?
I don't know about this add-on, but if it's the culprit, you can report the issue to its author.
https://addons.mozilla.org/en-us/firefox/addon/right-links/
Will observe for a week and see if the popup bug occurs again.
ok, it just happened again.  What should I do now to help?  I already have telemetry and other info set to share with mozilla.  What other info can I offer to retrieve and send in?

Note that other than popup menus not appearing, firefox is working just fine.  All other features still work, just popup menus within pages and in firefox gui stop appearing.

Advices?  Thank you for your attention.
I see this a lot and it's a huge problem for me.

Can I ask what Window Manager you use? I'm running awesome, which is an ICCCM non-re-parenting window manager. I'm wondering if that might be related, as it tickles bugs in otehr things such as Java.

I can confirm I have this behaviour on multiple Debian machines, across multiple versions of firefox/iceweasel and on thunderbird/icedove and co, but no non-Mozilla apps, so I suspect that it is a xul problem.

Starting in safe mode, new profile mode, removing plugins or even completely deleting my .mozilla directory doesn't seem to help.


The exact behaviour I see is that, after a period of time, anything that would pop up a new top-level window (in the X11 sense, e.g. menus, <select> menus, right click menus, URL auto-completion) simply fail. I occasionally see a very brief flicker on the screen as if it's trying and failing to create the window).

Sometimes the menu functionality comes back eventually over time. Restarting the X server always cures it.
What can I do to help the developers track this one down?
@Reporter, 

Are you still experiencing the issue on latest Firefox versions? 
 - Firefox 43: https://www.mozilla.org/en-US/firefox/new/
 - Firefox 46: https://nightly.mozilla.org/
Flags: needinfo?(wakeupnow)
I have downloaded and will try it, but as it is an intermittent thing it will take a while to verify.

Is this update being sent because it's believed that v43 fixes the problem or just to ascertain whether it has been fixed as a side-effect to other changes in the meantime?
Hi Ben, 

We want to ascertain whether it has been fixed in the meantime. If not we can find a right component for this bug so a developer can have a look at it. But first it would be better to know if this is still an issue or not.  

If you can reproduce please share the url's or any other info that can be used to reproduce it.
OK, no it still happens with 43.0.4.

In addition, I've switched from awesome to metacity as window manager and the problem persists, so I don't think it's related to that.

What can I do (beyond the information I sent last year) to help the developers debug this?
Thanks for the response. Can you find a pattern? You mentioned it is intermittent, but maybe you can identify some specific steps you did when you reproduced the issue.
Component: Untriaged → Menus
Flags: needinfo?(bjb-bugzilla)
Version: 30 Branch → 43 Branch
Flags: needinfo?(bjb-bugzilla) → needinfo?(bjb-mozilla)
No, no obvious pattern. Some habits which may differentiate me from some other users: I run very long sessions. Both X and my window manager run for months at a time, and firefox runs for days until its memory use gets problematic enough to warrant restarting it. The issue tends to show up after a long uptime.

When the issue happens it persists across restarts of firefox, even safe mode restarts or restarts where I completely delete the .firefox directory. It also sometimes affects thundebird, but it does so independently of whether it's affecting firefox.

It can stay a problem for days (but is immediately fixed by a restart of X -- not always a option) but will eventually go away and the menus will just start working again.

You can just about see that X is issuing a redraw to the window that would have been covered by the menu, so it's attempting to display the menu.

A few more clarifications: I'm using "window" in the X sense here. A new firefox window always works. What doesn't is right-click menus, menus at the top of the windows, and browser popups for things like warnings about plugins. So these are windows of type _NET_WM_WINDOW_TYPE_POPUP_MENU or similar, I'm guessing. Tooltip popups continue to work (e.g. hovering over tabs).
Flags: needinfo?(bjb-mozilla)
Adding to above: dragging tabs to change the ordering is another operation that stops working when this state is encountered.
Summary: Popup menus stop working in Firefox UI and on all web pages → Popup menus stop working in Firefox UI and on all web pages with X11
What more info is needed to confirm this bug?
Just confirming, this is still present version 38.7.1.

The bug is tagged "need info". What do you need?

What can I do to help get this long-standing bug diagnosed and maybe even fixed?
Scratch that -- looks like I've already verified it on versions up to 43.0.4.

This affects thunderbird too though so this feels like it's a lower-level problem with the XUL stuff or another UI components rather than a glitch in a specific version of Firefox itself.
I had the same problem and solved with rewriting the Xorg.conf file using nvidia-settings tool.

I don't know exactly what was wrong on the file that had that effect, maybe it was how I configured my multi-head setup.

The unexplainable yet is why it happened only on Firefox.

Hope it helps.
System info:
Arch Linux x86_64
Both i3 and Awesome with the same problem on Firefox 50.1.0.
See Also: → 1344620
(In reply to Pablo Andres Dealbera from comment #24)
> The unexplainable yet is why it happened only on Firefox.

I bet, it must have something to do with the hack that Mozilla programs use to work around X peculiarity, that annoys some people.

You probably noticed, that they do not behave like any other GTK (or Qt, or Motif) program regarding to popup windows.  Normally, when popup window, such as top or context menu is opened, it grabs all keyboard input to itself.  That means that any bindings that are intended to be handled by some other program (a window manager, xbindkeys(1) or whatever) stop working until you explicitly close the popup.

That is _not_ the case with Mozilla’s XUL-based interfaces: when you press a key, that is not handled by Firefox’s popup window, that window is *closed* and key is reached its destination.

See also https://bugzil.la/903761

I have the same thing happening to me, for a few months already, and by now multiple times a day. It's gotten to the point where I type out most of my urls because the address bar dropdown doesn't show any longer (but the completion of the top entry still works).
I'm also on i3, like Pablo.
Obviously not sure if that matters, but it does confuse some other applications (like Idea/PyCharm) so I thought I'd mention it.
Also, I can confirm Ben's observation that dragging tabs stopped working, although I hadn't noticed so far.

Below my about:support stuff (the things that seemed remotely relevant to me as a layman).
Not sure wtf happened to "important modified preferences", I'm fairly sure I didn't do most of that by hand at least.
And somehow my graphics section looks a whole lot more intricate than I'd have expected. 0_o
In a way, it's good to know I'm not the only one experiencing this, but it does seem to be an elusive one.
Let me know if I can help in any other way.

Application Basics

Name: Firefox
Version: 65.0.1
Build ID: 20190215001400
User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:65.0) Gecko/20100101 Firefox/65.0
OS: Linux 4.4.0-141-generic
Multiprocess Windows: 4/4 (Enabled by default)
Web Content Processes: 5/4
Enterprise Policies: Inactive
Google Key: Found
Mozilla Location Service Key: Missing
Safe Mode: false

Extensions

Name: KeePassXC-Browser
Version: 1.3.2
Enabled: true
ID: keepassxc-browser@keepassxc.org

Name: Send to Internet Archive
Version: 1.0.0
Enabled: true
ID: {a8a8a2bd-b60e-4565-b092-6114c4fa1e48}

Name: uBlock Origin
Version: 1.18.6
Enabled: true
ID: uBlock0@raymondhill.net

Name: uMatrix
Version: 1.3.16
Enabled: true
ID: uMatrix@raymondhill.net

Name: Zotero Connector
Version: 5.0.54
Enabled: true
ID: zotero@chnm.gmu.edu

Name: GNOME Shell integration
Version: 10.1
Enabled: false
ID: chrome-gnome-shell@gnome.org

Name: Greasemonkey
Version: 4.7
Enabled: false
ID: {e4a8a97b-f2ed-450b-b12d-ee082ba24781}

Name: Tree Style Tab
Version: 2.8.6
Enabled: false
ID: treestyletab@piro.sakura.ne.jp

Name: Vim Vixen
Version: 0.20
Enabled: false
ID: vim-vixen@i-beam.org

Graphics

Features
Compositing: Basic
Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled
WebGL 1 Driver WSI Info: GLX 1.4 GLX_VENDOR(client): NVIDIA Corporation GLX_VENDOR(server): NVIDIA Corporation Extensions: GLX_EXT_visual_info GLX_EXT_visual_rating GLX_EXT_import_context GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGI_video_sync GLX_SGI_swap_control GLX_EXT_swap_control GLX_EXT_swap_control_tear GLX_EXT_texture_from_pixmap GLX_EXT_buffer_age GLX_ARB_create_context GLX_ARB_create_context_profile GLX_EXT_create_context_es_profile GLX_EXT_create_context_es2_profile GLX_ARB_create_context_no_error GLX_ARB_create_context_robustness GLX_NV_delay_before_swap GLX_EXT_stereo_tree GLX_ARB_context_flush_control GLX_NV_robustness_video_memory_purge GLX_ARB_multisample GLX_NV_float_buffer GLX_ARB_fbconfig_float GLX_EXT_framebuffer_sRGB GLX_NV_copy_image GLX_ARB_get_proc_address
WebGL 1 Driver Renderer: NVIDIA Corporation -- GeForce GTX 980/PCIe/SSE2
WebGL 1 Driver Version: 4.6.0 NVIDIA 410.93
WebGL 1 Driver Extensions: GL_AMD_multi_draw_indirect GL_AMD_seamless_cubemap_per_texture GL_AMD_vertex_shader_viewport_index GL_AMD_vertex_shader_layer GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_bindless_texture GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compatibility GL_ARB_compressed_texture_pixel_storage GL_ARB_conservative_depth GL_ARB_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_ES2_compatibility GL_ARB_ES3_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_layer_viewport GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_fragment_shader_interlock GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_geometry_shader4 GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_gl_spirv GL_ARB_gpu_shader5 GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader_int64 GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_imaging GL_ARB_indirect_parameters GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_internalformat_query2 GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multi_draw_indirect GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_occlusion_query2 GL_ARB_parallel_shader_compile GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_polygon_offset_clamp GL_ARB_post_depth_coverage GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_sample_locations GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_seamless_cubemap_per_texture GL_ARB_separate_shader_objects GL_ARB_shader_atomic_counter_ops GL_ARB_shader_atomic_counters GL_ARB_shader_ballot GL_ARB_shader_bit_encoding GL_ARB_shader_clock GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shader_image_load_store GL_ARB_shader_image_size GL_ARB_shader_objects GL_ARB_shader_precision GL_ARB_shader_storage_buffer_object GL_ARB_shader_subroutine GL_ARB_shader_texture_image_samples GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shader_viewport_layer_array GL_ARB_shading_language_420pack GL_ARB_shading_language_include GL_ARB_shading_language_packing GL_ARB_shadow GL_ARB_sparse_buffer GL_ARB_sparse_texture GL_ARB_sparse_texture2 GL_ARB_sparse_texture_clamp GL_ARB_spirv_extensions GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_tessellation_shader GL_ARB_texture_barrier GL_ARB_texture_border_clamp GL_ARB_texture_buffer_object GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_buffer_range GL_ARB_texture_compression GL_ARB_texture_compression_bptc GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_cube_map_array GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_filter_anisotropic GL_ARB_texture_filter_minmax GL_ARB_texture_float GL_ARB_texture_gather GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_mirrored_repeat GL_ARB_texture_multisample GL_ARB_texture_non_power_of_two GL_ARB_texture_query_levels GL_ARB_texture_query_lod GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_texture_rgb10_a2ui GL_ARB_texture_stencil8 GL_ARB_texture_storage GL_ARB_texture_storage_multisample GL_ARB_texture_swizzle GL_ARB_texture_view GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_transform_feedback_instanced GL_ARB_transform_feedback_overflow_query GL_ARB_transpose_matrix GL_ARB_uniform_buffer_object GL_ARB_vertex_array_bgra GL_ARB_vertex_array_object GL_ARB_vertex_attrib_64bit GL_ARB_vertex_attrib_binding GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_vertex_type_10f_11f_11f_rev GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_ARB_window_pos GL_ATI_draw_buffers GL_ATI_texture_float GL_ATI_texture_mirror_once GL_S3_s3tc GL_EXT_texture_env_add GL_EXT_abgr GL_EXT_bgra GL_EXT_bindable_uniform GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_compiled_vertex_array GL_EXT_Cg_shader GL_EXT_depth_bounds_test GL_EXT_direct_state_access GL_EXT_draw_buffers2 GL_EXT_draw_instanced GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXTX_framebuffer_mixed_formats GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_geometry_shader4 GL_EXT_gpu_program_parameters GL_EXT_gpu_shader4 GL_EXT_multi_draw_arrays GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_packed_pixels GL_EXT_pixel_buffer_object GL_EXT_point_parameters GL_EXT_polygon_offset_clamp GL_EXT_post_depth_coverage GL_EXT_provoking_vertex GL_EXT_raster_multisample GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_shader_objects GL_EXT_separate_specular_color GL_EXT_shader_image_load_formatted GL_EXT_shader_image_load_store GL_EXT_shader_integer_mix GL_EXT_shadow_funcs GL_EXT_sparse_texture2 GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture3D GL_EXT_texture_array GL_EXT_texture_buffer_object GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_latc GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_cube_map GL_EXT_texture_edge_clamp GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_EXT_texture_filter_anisotropic GL_EXT_texture_filter_minmax GL_EXT_texture_integer GL_EXT_texture_lod GL_EXT_texture_lod_bias GL_EXT_texture_mirror_clamp GL_EXT_texture_object GL_EXT_texture_shared_exponent GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_texture_storage GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback2 GL_EXT_vertex_array GL_EXT_vertex_array_bgra GL_EXT_vertex_attrib_64bit GL_EXT_window_rectangles GL_EXT_x11_sync_object GL_EXT_import_sync_object GL_NV_robustness_video_memory_purge GL_IBM_rasterpos_clip GL_IBM_texture_mirrored_repeat GL_KHR_context_flush_control GL_KHR_debug GL_EXT_memory_object GL_EXT_memory_object_fd GL_KHR_parallel_shader_compile GL_KHR_no_error GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_EXT_semaphore GL_EXT_semaphore_fd GL_KTX_buffer_region GL_NV_alpha_to_coverage_dither_control GL_NV_bindless_multi_draw_indirect GL_NV_bindless_multi_draw_indirect_count GL_NV_bindless_texture GL_NV_blend_equation_advanced GL_NV_blend_equation_advanced_coherent GL_NV_blend_minmax_factor GL_NV_blend_square GL_NV_command_list GL_NV_compute_program5 GL_NV_conditional_render GL_NV_conservative_raster GL_NV_conservative_raster_dilate GL_NV_copy_depth_to_color GL_NV_copy_image GL_NV_depth_buffer_float GL_NV_depth_clamp GL_NV_draw_texture GL_NV_draw_vulkan_image GL_NV_ES1_1_compatibility GL_NV_ES3_1_compatibility GL_NV_explicit_multisample GL_NV_feature_query GL_NV_fence GL_NV_fill_rectangle GL_NV_float_buffer GL_NV_fog_distance GL_NV_fragment_coverage_to_color GL_NV_fragment_program GL_NV_fragment_program_option GL_NV_fragment_program2 GL_NV_fragment_shader_interlock GL_NV_framebuffer_mixed_samples GL_NV_framebuffer_multisample_coverage GL_NV_geometry_shader4 GL_NV_geometry_shader_passthrough GL_NV_gpu_program4 GL_NV_internalformat_sample_query GL_NV_gpu_program4_1 GL_NV_gpu_program5 GL_NV_gpu_program5_mem_extended GL_NV_gpu_program_fp64 GL_NV_gpu_shader5 GL_NV_half_float GL_NV_light_max_exponent GL_NV_multisample_coverage GL_NV_multisample_filter_hint GL_NV_occlusion_query GL_NV_packed_depth_stencil GL_NV_parameter_buffer_object GL_NV_parameter_buffer_object2 GL_NV_path_rendering GL_NV_path_rendering_shared_edge GL_NV_pixel_data_range GL_NV_point_sprite GL_NV_primitive_restart GL_NV_query_resource GL_NV_query_resource_tag GL_NV_register_combiners GL_NV_register_combiners2 GL_NV_sample_locations GL_NV_sample_mask_override_coverage GL_NV_shader_atomic_counters GL_NV_shader_atomic_float GL_NV_shader_atomic_fp16_vector GL_NV_shader_atomic_int64 GL_NV_shader_buffer_load GL_NV_shader_storage_buffer_object GL_NV_texgen_reflection GL_NV_texture_barrier GL_NV_texture_compression_vtc GL_NV_texture_env_combine4 GL_NV_texture_multisample GL_NV_texture_rectangle GL_NV_texture_rectangle_compressed GL_NV_texture_shader GL_NV_texture_shader2 GL_NV_texture_shader3 GL_NV_transform_feedback 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WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_frag_depth EXT_sRGB EXT_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_etc WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
WebGL 2 Driver WSI Info: GLX 1.4 GLX_VENDOR(client): NVIDIA Corporation GLX_VENDOR(server): NVIDIA Corporation Extensions: GLX_EXT_visual_info GLX_EXT_visual_rating GLX_EXT_import_context GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGI_video_sync GLX_SGI_swap_control GLX_EXT_swap_control GLX_EXT_swap_control_tear GLX_EXT_texture_from_pixmap GLX_EXT_buffer_age GLX_ARB_create_context GLX_ARB_create_context_profile GLX_EXT_create_context_es_profile GLX_EXT_create_context_es2_profile GLX_ARB_create_context_no_error GLX_ARB_create_context_robustness GLX_NV_delay_before_swap GLX_EXT_stereo_tree GLX_ARB_context_flush_control GLX_NV_robustness_video_memory_purge GLX_ARB_multisample GLX_NV_float_buffer GLX_ARB_fbconfig_float GLX_EXT_framebuffer_sRGB GLX_NV_copy_image GLX_ARB_get_proc_address
WebGL 2 Driver Renderer: NVIDIA Corporation -- GeForce GTX 980/PCIe/SSE2
WebGL 2 Driver Version: 3.2.0 NVIDIA 410.93
WebGL 2 Driver Extensions: GL_AMD_multi_draw_indirect GL_AMD_seamless_cubemap_per_texture GL_AMD_vertex_shader_viewport_index GL_AMD_vertex_shader_layer GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_bindless_texture GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compressed_texture_pixel_storage GL_ARB_conservative_depth GL_ARB_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_ES2_compatibility GL_ARB_ES3_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_layer_viewport GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_fragment_shader_interlock GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_geometry_shader4 GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_gl_spirv GL_ARB_gpu_shader5 GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader_int64 GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_imaging GL_ARB_indirect_parameters GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_internalformat_query2 GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multi_draw_indirect GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_occlusion_query2 GL_ARB_parallel_shader_compile GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_polygon_offset_clamp GL_ARB_post_depth_coverage GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_sample_locations GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_seamless_cubemap_per_texture GL_ARB_separate_shader_objects GL_ARB_shader_atomic_counter_ops GL_ARB_shader_atomic_counters GL_ARB_shader_ballot GL_ARB_shader_bit_encoding GL_ARB_shader_clock GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shader_image_load_store GL_ARB_shader_image_size GL_ARB_shader_objects GL_ARB_shader_precision GL_ARB_shader_storage_buffer_object GL_ARB_shader_subroutine GL_ARB_shader_texture_image_samples GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shader_viewport_layer_array GL_ARB_shading_language_420pack GL_ARB_shading_language_include GL_ARB_shading_language_packing GL_ARB_shadow GL_ARB_sparse_buffer GL_ARB_sparse_texture GL_ARB_sparse_texture2 GL_ARB_sparse_texture_clamp GL_ARB_spirv_extensions GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_tessellation_shader GL_ARB_texture_barrier GL_ARB_texture_border_clamp GL_ARB_texture_buffer_object GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_buffer_range GL_ARB_texture_compression GL_ARB_texture_compression_bptc GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_cube_map_array GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_filter_anisotropic GL_ARB_texture_filter_minmax GL_ARB_texture_float GL_ARB_texture_gather GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_mirrored_repeat GL_ARB_texture_multisample GL_ARB_texture_non_power_of_two GL_ARB_texture_query_levels GL_ARB_texture_query_lod GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_texture_rgb10_a2ui GL_ARB_texture_stencil8 GL_ARB_texture_storage GL_ARB_texture_storage_multisample GL_ARB_texture_swizzle 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GL_EXT_framebuffer_multisample GL_EXTX_framebuffer_mixed_formats GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_geometry_shader4 GL_EXT_gpu_program_parameters GL_EXT_gpu_shader4 GL_EXT_multi_draw_arrays GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_packed_pixels GL_EXT_pixel_buffer_object GL_EXT_point_parameters GL_EXT_polygon_offset_clamp GL_EXT_post_depth_coverage GL_EXT_provoking_vertex GL_EXT_raster_multisample GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_shader_objects GL_EXT_separate_specular_color GL_EXT_shader_image_load_formatted GL_EXT_shader_image_load_store GL_EXT_shader_integer_mix GL_EXT_shadow_funcs GL_EXT_sparse_texture2 GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture3D GL_EXT_texture_array GL_EXT_texture_buffer_object GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_latc GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_cube_map 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GL_NV_bindless_multi_draw_indirect_count GL_NV_bindless_texture GL_NV_blend_equation_advanced GL_NV_blend_equation_advanced_coherent GL_NV_blend_minmax_factor GL_NV_blend_square GL_NV_command_list GL_NV_compute_program5 GL_NV_conditional_render GL_NV_conservative_raster GL_NV_conservative_raster_dilate GL_NV_copy_depth_to_color GL_NV_copy_image GL_NV_depth_buffer_float GL_NV_depth_clamp GL_NV_draw_texture GL_NV_draw_vulkan_image GL_NV_ES1_1_compatibility GL_NV_ES3_1_compatibility GL_NV_explicit_multisample GL_NV_feature_query GL_NV_fence GL_NV_fill_rectangle GL_NV_float_buffer GL_NV_fog_distance GL_NV_fragment_coverage_to_color GL_NV_fragment_program GL_NV_fragment_program_option GL_NV_fragment_program2 GL_NV_fragment_shader_interlock GL_NV_framebuffer_mixed_samples GL_NV_framebuffer_multisample_coverage GL_NV_geometry_shader4 GL_NV_geometry_shader_passthrough GL_NV_gpu_program4 GL_NV_internalformat_sample_query GL_NV_gpu_program4_1 GL_NV_gpu_program5 GL_NV_gpu_program5_mem_extended GL_NV_gpu_program_fp64 GL_NV_gpu_shader5 GL_NV_half_float GL_NV_light_max_exponent GL_NV_multisample_coverage GL_NV_multisample_filter_hint GL_NV_occlusion_query GL_NV_packed_depth_stencil GL_NV_parameter_buffer_object GL_NV_parameter_buffer_object2 GL_NV_path_rendering GL_NV_path_rendering_shared_edge GL_NV_pixel_data_range GL_NV_point_sprite GL_NV_primitive_restart GL_NV_query_resource GL_NV_query_resource_tag GL_NV_register_combiners GL_NV_register_combiners2 GL_NV_sample_locations GL_NV_sample_mask_override_coverage GL_NV_shader_atomic_counters GL_NV_shader_atomic_float GL_NV_shader_atomic_fp16_vector GL_NV_shader_atomic_int64 GL_NV_shader_buffer_load GL_NV_shader_storage_buffer_object GL_NV_texgen_reflection GL_NV_texture_barrier GL_NV_texture_compression_vtc GL_NV_texture_env_combine4 GL_NV_texture_multisample GL_NV_texture_rectangle GL_NV_texture_rectangle_compressed GL_NV_texture_shader GL_NV_texture_shader2 GL_NV_texture_shader3 GL_NV_transform_feedback GL_NV_transform_feedback2 GL_NV_uniform_buffer_unified_memory GL_NV_vdpau_interop GL_NV_vertex_array_range GL_NV_vertex_array_range2 GL_NV_vertex_attrib_integer_64bit GL_NV_vertex_buffer_unified_memory GL_NV_vertex_program GL_NV_vertex_program1_1 GL_NV_vertex_program2 GL_NV_vertex_program2_option GL_NV_vertex_program3 GL_NV_viewport_array2 GL_NV_viewport_swizzle GL_NVX_conditional_render GL_NVX_gpu_memory_info GL_NVX_nvenc_interop GL_NV_shader_thread_group GL_NV_shader_thread_shuffle GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_OVR_multiview GL_OVR_multiview2 GL_SGIS_generate_mipmap GL_SGIS_texture_lod GL_SGIX_depth_texture GL_SGIX_shadow GL_SUN_slice_accum
WebGL 2 Extensions: EXT_color_buffer_float EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_etc WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
Off Main Thread Painting Enabled: true
Off Main Thread Painting Worker Count: 4
GPU #1
Active: Yes
Description: NVIDIA Corporation -- GeForce GTX 980/PCIe/SSE2
Vendor ID: NVIDIA Corporation
Device ID: GeForce GTX 980/PCIe/SSE2
Driver Version: 4.6.0 NVIDIA 410.93

Diagnostics
AzureCanvasAccelerated: 0
AzureCanvasBackend: skia
AzureContentBackend: skia
AzureFallbackCanvasBackend: none
CairoUseXRender: 0
Decision Log
HW_COMPOSITING:
blocked by default: Acceleration blocked by platform
OPENGL_COMPOSITING:
unavailable by default: Hardware compositing is disabled
WEBRENDER:
opt-in by default: WebRender is an opt-in feature
unavailable by runtime: Hardware compositing is disabled
WEBRENDER_QUALIFIED:
blocked by env: No qualified hardware

Media

Audio Backend: remote
Max Channels: 2
Preferred Sample Rate: 44100
Output Devices
Name: Group
GM204 High Definition Audio Controller Digital Stereo (HDMI): /devices/pci0000:00/0000:00:02.0/0000:03:00.1/sound/card1
Built-in Audio Analog Stereo: /devices/pci0000:00/0000:00:1b.0/sound/card0
Remapped GM204 High Definition Audio Controller Digital Stereo (HDMI):
Input Devices
Name: Group
Monitor of GM204 High Definition Audio Controller Digital Stereo (HDMI): /devices/pci0000:00/0000:00:02.0/0000:03:00.1/sound/card1
Monitor of Built-in Audio Analog Stereo: /devices/pci0000:00/0000:00:1b.0/sound/card0
Built-in Audio Analog Stereo: /devices/pci0000:00/0000:00:1b.0/sound/card0
Monitor of Remapped GM204 High Definition Audio Controller Digital Stereo (HDMI):

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print.tmp.printerfeatures.cA212b.paper.5.name: Tabloid
print.tmp.printerfeatures.cA212b.paper.5.width_mm: 279
print.tmp.printerfeatures.cA212b.paper.6.height_mm: 254
print.tmp.printerfeatures.cA212b.paper.6.is_inch: true
print.tmp.printerfeatures.cA212b.paper.6.name: Executive
print.tmp.printerfeatures.cA212b.paper.6.width_mm: 190
print.tmp.printerfeatures.cA212b.paper.count: 7
print.tmp.printerfeatures.cA212b.plex.0.name: default
print.tmp.printerfeatures.cA212b.plex.count: 1
print.tmp.printerfeatures.cA212b.resolution.0.name: default
print.tmp.printerfeatures.cA212b.resolution.count: 1
print.tmp.printerfeatures.cA212b.supports_colorspace_change: false
print.tmp.printerfeatures.cA212b.supports_downloadfonts_change: false
print.tmp.printerfeatures.cA212b.supports_jobtitle_change: false
print.tmp.printerfeatures.cA212b.supports_orientation_change: true
print.tmp.printerfeatures.cA212b.supports_paper_size_change: true
print.tmp.printerfeatures.cA212b.supports_plex_change: false
print.tmp.printerfeatures.cA212b.supports_printincolor_change: true
print.tmp.printerfeatures.cA212b.supports_resolution_change: false
print.tmp.printerfeatures.cA212b.supports_spoolercommand_change: false
print.tmp.printerfeatures.PostScript/default.can_change_colorspace: false
print.tmp.printerfeatures.PostScript/default.can_change_downloadfonts: false
print.tmp.printerfeatures.PostScript/default.can_change_jobtitle: false
print.tmp.printerfeatures.PostScript/default.can_change_num_copies: true
print.tmp.printerfeatures.PostScript/default.can_change_orientation: true
print.tmp.printerfeatures.PostScript/default.can_change_paper_size: true
print.tmp.printerfeatures.PostScript/default.can_change_plex: false
print.tmp.printerfeatures.PostScript/default.can_change_printincolor: true
print.tmp.printerfeatures.PostScript/default.can_change_resolution: false
print.tmp.printerfeatures.PostScript/default.can_change_spoolercommand: true
print.tmp.printerfeatures.PostScript/default.colorspace.0.name: default
print.tmp.printerfeatures.PostScript/default.colorspace.count: 1
print.tmp.printerfeatures.PostScript/default.has_special_printerfeatures: true
print.tmp.printerfeatures.PostScript/default.orientation.0.name: portrait
print.tmp.printerfeatures.PostScript/default.orientation.1.name: landscape
print.tmp.printerfeatures.PostScript/default.orientation.count: 2
print.tmp.printerfeatures.PostScript/default.paper.0.height_mm: 210
print.tmp.printerfeatures.PostScript/default.paper.0.is_inch: false
print.tmp.printerfeatures.PostScript/default.paper.0.name: A5
print.tmp.printerfeatures.PostScript/default.paper.0.width_mm: 148
print.tmp.printerfeatures.PostScript/default.paper.1.height_mm: 297
print.tmp.printerfeatures.PostScript/default.paper.1.is_inch: false
print.tmp.printerfeatures.PostScript/default.paper.1.name: A4
print.tmp.printerfeatures.PostScript/default.paper.1.width_mm: 210
print.tmp.printerfeatures.PostScript/default.paper.2.height_mm: 420
print.tmp.printerfeatures.PostScript/default.paper.2.is_inch: false
print.tmp.printerfeatures.PostScript/default.paper.2.name: A3
print.tmp.printerfeatures.PostScript/default.paper.2.width_mm: 297
print.tmp.printerfeatures.PostScript/default.paper.3.height_mm: 279
print.tmp.printerfeatures.PostScript/default.paper.3.is_inch: true
print.tmp.printerfeatures.PostScript/default.paper.3.name: Letter
print.tmp.printerfeatures.PostScript/default.paper.3.width_mm: 215
print.tmp.printerfeatures.PostScript/default.paper.4.height_mm: 355
print.tmp.printerfeatures.PostScript/default.paper.4.is_inch: true
print.tmp.printerfeatures.PostScript/default.paper.4.name: Legal
print.tmp.printerfeatures.PostScript/default.paper.4.width_mm: 215
print.tmp.printerfeatures.PostScript/default.paper.5.height_mm: 431
print.tmp.printerfeatures.PostScript/default.paper.5.is_inch: true
print.tmp.printerfeatures.PostScript/default.paper.5.name: Tabloid
print.tmp.printerfeatures.PostScript/default.paper.5.width_mm: 279
print.tmp.printerfeatures.PostScript/default.paper.6.height_mm: 254
print.tmp.printerfeatures.PostScript/default.paper.6.is_inch: true
print.tmp.printerfeatures.PostScript/default.paper.6.name: Executive
print.tmp.printerfeatures.PostScript/default.paper.6.width_mm: 190
print.tmp.printerfeatures.PostScript/default.paper.count: 7
print.tmp.printerfeatures.PostScript/default.plex.0.name: default
print.tmp.printerfeatures.PostScript/default.plex.count: 1
print.tmp.printerfeatures.PostScript/default.resolution.0.name: default
print.tmp.printerfeatures.PostScript/default.resolution.count: 1
print.tmp.printerfeatures.PostScript/default.supports_colorspace_change: false
print.tmp.printerfeatures.PostScript/default.supports_downloadfonts_change: false
print.tmp.printerfeatures.PostScript/default.supports_jobtitle_change: false
print.tmp.printerfeatures.PostScript/default.supports_orientation_change: true
print.tmp.printerfeatures.PostScript/default.supports_paper_size_change: true
print.tmp.printerfeatures.PostScript/default.supports_plex_change: false
print.tmp.printerfeatures.PostScript/default.supports_printincolor_change: true
print.tmp.printerfeatures.PostScript/default.supports_resolution_change: false
print.tmp.printerfeatures.PostScript/default.supports_spoolercommand_change: true
privacy.cpd.cache: false
privacy.cpd.offlineApps: true
privacy.cpd.sessions: false
privacy.cpd.siteSettings: true
privacy.donottrackheader.enabled: true
privacy.history.custom: true
privacy.popups.showBrowserMessage: false
privacy.sanitize.migrateFx3Prefs: true
privacy.sanitize.pending: [{"id":"newtab-container","itemsToClear":[],"options":{}}]
privacy.sanitize.timeSpan: 0
security.disable_button.openCertManager: false
security.OCSP.enabled: 2
security.sandbox.content.tempDirSuffix: 4e578613-b110-41ba-8b05-721bf3f2689d
security.sandbox.plugin.tempDirSuffix: 21b3f378-6b8d-41c1-a304-48538b084a3a
services.sync.declinedEngines:
services.sync.engine.greasemonkey: true
services.sync.engine.prefs.modified: true
signon.importedFromSqlite: true
signon.rememberSignons: false
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1551101961

Library Versions

NSPR
Expected minimum version: 4.20
Version in use: 4.20

NSS
Expected minimum version: 3.41
Version in use: 3.41

NSSSMIME
Expected minimum version: 3.41
Version in use: 3.41

NSSSSL
Expected minimum version: 3.41
Version in use: 3.41

NSSUTIL
Expected minimum version: 3.41
Version in use: 3.41

Sandbox

Seccomp-BPF (System Call Filtering): true
Seccomp Thread Synchronization: true
User Namespaces: true
Content Process Sandboxing: true
Media Plugin Sandboxing: true
Content Process Sandbox Level: 4
Effective Content Process Sandbox Level: 4

I actually use Awesome. But back then I tested the bug on i3 in case it was Awesome specific.

For what it’s worth, it seems that Waterfox [1], as of version 56.2.7.1 at least, does not have this issue. Tested at Debian GNU/Linux Stretch under no WM, which is, as I said above, the setup that triggers the bug immediately.

That’s curious the more so because the latest pre-Quantum Mozilla’s browser release, Waterfox forked off, was subjected by this bug.

[1] https://www.waterfoxproject.org/

Dmitry Alexandrov <321942@gmail.com> wrote:

under no WM, which is, as I said above, the setup that triggers the bug immediately.

Ah, sorry, I said that in the parallel (yet not closed) thread for the same bug [1].

[1] https://bugzilla.mozilla.org/show_bug.cgi?id=903761#c22

This happens to me as well. i3 on arch linux, firefox is up to date.

  • no URL dropdown
  • no select box options in forms
  • no right click menu anywhere (page or UI)
  • no UI element that creates a new window/panel works (menu, add-on menus, bookmark bar folder expansion, Back/Forward list, etc).

Restarting firefox makes everything work again, but before long the problem recurs.

I get this pretty frequently too. i3. Today I think I nailed it down to specific circumstances: in developing a website I was taking the same actions over and over, since the context menu kept breaking and I needed it for some devtools panel features. Kept trying, it kept breaking. The sequence of events which could reproduce it was this:

  1. Open Firefox fresh with no addons enabled.
  2. Open the website I'm developing. Nothing special. Context menu fine.
  3. Open devtools, go to network panel. Click some stuff on the site which causes some requests. Context menu still fine.
  4. Make a particular request which causes a new tab to open. In particular, this made an ajax call, and the server side (running locally on my machine) triggered Firefox to open a new tab, showing an email it had generated. (Ruby on Rails's "Letter Opener" module.)
  5. Close that newly opened tab. I'm taken back to my site. Attempt to right-click the request which occurred so I can "copy as curl". But the context menu is now broken.

I did this maybe 5 times in a row. I then deactivated "Letter Opener" so that the new tab wouldn't be opened, and repeated again, and the context menu did not break.

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