Open Bug 1556143 Opened 6 years ago Updated 3 years ago

When dragging a tab into another window, an afterimage will sometimes stay behind that can only be resolved by restarting the computer.

Categories

(Core :: DOM: Copy & Paste and Drag & Drop, defect, P5)

67 Branch
defect

Tracking

()

UNCONFIRMED

People

(Reporter: cengels, Unassigned)

Details

Attachments

(1 file)

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:67.0) Gecko/20100101 Firefox/67.0

Steps to reproduce:

Dragged a tab from the only existing Firefox window on display 1 to free space on display 2 to create a new window with this tab in it.

Actual results:

The new window is properly created, but an afterimage of the preview is sometimes (10%-20% of the time, possibly related to how quickly the tab is dragged to the second display) left behind. Shutting down the Firefox process tree does nothing; restarting explorer.exe to redraw the Desktop does nothing. The thumbnail is overlaid on every other window, including non-Firefox windows.

Add-ons, cache, or similar things can't be the problem, because this is essentially a reinstall of Firefox. Also, this bug is exceptionally old—at least 5 or 6 years ago was the first time I experienced it.

Expected results:

No thumbnail should have been left behind.

Troubleshooting information

Application Basics
------------------

Name: Firefox
Version: 67.0
Build ID: 20190516215225
Update Channel: release
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:67.0) Gecko/20100101 Firefox/67.0
OS: Windows_NT 10.0
Launcher Process: Disabled forcibly
Multiprocess Windows: 2/2 Enabled by default
Web Content Processes: 8/8
Enterprise Policies: Inactive
Google Location Service Key: Found
Google Safebrowsing Key: Found
Mozilla Location Service Key: Found
Safe Mode: false

Crash Reports
-------------

All Crash Reports    Firefox Features
-------------------------------------

Name: Firefox Monitor
Version: 3.0
ID: fxmonitor@mozilla.org

Name: Firefox Screenshots
Version: 37.1.0
ID: screenshots@mozilla.org

Name: Form Autofill
Version: 1.0
ID: formautofill@mozilla.org

Name: Web Compat
Version: 4.0.0
ID: webcompat@mozilla.org

Name: WebCompat Reporter
Version: 1.1.0
ID: webcompat-reporter@mozilla.org

Extensions
----------

Name: Augmented Steam
Version: 0.9.7
Enabled: true
ID: {1be309c5-3e4f-4b99-927d-bb500eb4fa88}

Name: Auto Tab Discard
Version: 0.3.2
Enabled: true
ID: {c2c003ee-bd69-42a2-b0e9-6f34222cb046}

Name: Better TweetDeck
Version: 3.9.4
Enabled: true
ID: BetterTweetDeck@erambert.me

Name: Firefox DevTools ADB Extension
Version: 0.0.5
Enabled: true
ID: adb@mozilla.org

Name: LastPass: Free Password Manager
Version: 4.28.0.4
Enabled: true
ID: support@lastpass.com

Name: Mute sites by default
Version: 1.10
Enabled: true
ID: @mute-sites-by-default

Name: Reddit Enhancement Suite
Version: 5.16.9
Enabled: true
ID: jid1-xUfzOsOFlzSOXg@jetpack

Name: Redux DevTools
Version: 2.17.1
Enabled: true
ID: extension@redux.devtools

Name: Stylus
Version: 1.5.3
Enabled: true
ID: {7a7a4a92-a2a0-41d1-9fd7-1e92480d612d}

Name: Text Contrast for Dark Themes
Version: 2.1.5
Enabled: true
ID: jid1-nMVE2oP40qeQDQ@jetpack

Name: uBlock Origin
Version: 1.19.6
Enabled: true
ID: uBlock0@raymondhill.net

Name: View Image
Version: 2.1.1
Enabled: true
ID: {287dcf75-bec6-4eec-b4f6-71948a2eea29}

Name: Yet Another Smooth Scrolling WE
Version: 2.0.6
Enabled: true
ID: yetanothersmoothscrollingwe@kataho

Name: Firefox Color
Version: 2.1.2
Enabled: false
ID: FirefoxColor@mozilla.com

Security Software
-----------------

Type:

Type:

Type:

Graphics
--------

Features
Compositing: Direct3D 11 (Advanced Layers)
asyncPanZoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled
webgl1WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 0000000000009e49) EGL_VERSION: 1.4 (ANGLE 2.1.0.eff6bfdb1db9) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_MOZ_create_context_provoking_vertex_dont_care EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context
WebGL 1 Driver Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 970 Direct3D11 vs_5_0 ps_5_0)
WebGL 1 Driver Version: OpenGL ES 2.0 (ANGLE 2.1.0.eff6bfdb1db9)
WebGL 1 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture
WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_disjoint_timer_query EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_filter_anisotropic 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_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: EGL_VENDOR: Google Inc. (adapter LUID: 0000000000009e49) EGL_VERSION: 1.4 (ANGLE 2.1.0.eff6bfdb1db9) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_MOZ_create_context_provoking_vertex_dont_care EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context
WebGL 2 Driver Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 970 Direct3D11 vs_5_0 ps_5_0)
WebGL 2 Driver Version: OpenGL ES 3.0 (ANGLE 2.1.0.eff6bfdb1db9)
WebGL 2 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_multiview GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture
WebGL 2 Extensions: EXT_color_buffer_float EXT_disjoint_timer_query EXT_float_blend EXT_texture_filter_anisotropic OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
Direct2D: true
Off Main Thread Painting Enabled: true
Off Main Thread Painting Worker Count: 4
Target Frame Rate: 60
DirectWrite: true (10.0.17763.168)
GPU #1
Active: Yes
Description: NVIDIA GeForce GTX 970
Vendor ID: 0x10de
Device ID: 0x13c2
Driver Version: 23.21.13.9065
Driver Date: 1-3-2018
Drivers: C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nvldumdx.dll C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_5601d21ccd639df9\nvldumd.dll
Subsys ID: 31601462
RAM: 4096

Diagnostics
AzureCanvasBackend: direct2d 1.1
AzureCanvasBackend (UI Process): skia
AzureContentBackend: direct2d 1.1
AzureContentBackend (UI Process): skia
AzureFallbackCanvasBackend (UI Process): cairo
GPUProcessPid: 10164
ClearType Parameters: \\.\DISPLAY1 [ Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] \\.\DISPLAY2 [ Gamma: 2.2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ]
Decision Log
WEBRENDER:
opt-in by default: WebRender is an opt-in feature




Media
-----

Audio Backend: wasapi
Max Channels: 8
Preferred Sample Rate: 48000
Output Devices
Name: Group
Realtek Digital Output (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Kopfhörer (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Digitalaudio (S/PDIF) (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Lautsprecher (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Digitalaudio (S/PDIF) (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
NVIDIA Output (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Realtek Digital Output(Optical) (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Lautsprecher (USB Advanced Audio Device): USB\VID_0D8C&PID_016C&MI_00\7&451a6b6&0&0000
Lautsprecher (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
NVIDIA Output (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Digitalaudio (HDMI) (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Interne AUX-Buchse (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
NVIDIA Output (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Digitalaudio (HDMI) (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Digitalaudio (HDMI) (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Digitalaudio (HDMI) (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
NVIDIA Output (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Input Devices
Name: Group
Front (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Mikrofon (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Mikrofon (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Interne AUX-Buchse (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Center (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Interne AUX-Buchse (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Interne AUX-Buchse (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Mikrofon (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Stereomix (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Interne AUX-Buchse (NVIDIA High Definition Audio): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Rear (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Eingang (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Interne AUX-Buchse (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Interne AUX-Buchse (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Front Pink In (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Mikrofon (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Subwoofer (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Interne AUX-Buchse (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10DE&DEV_0071&SUBSYS_14623160&REV_1001\5&2c602d13&0&0001
Eingang (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Eingang (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Mikrofon (USB Advanced Audio Device): USB\VID_0D8C&PID_016C&MI_00\7&451a6b6&0&0000
Interne AUX-Buchse (High Definition Audio-Gerät): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001
Side (Realtek High Definition Audio): HDAUDIO\FUNC_01&VEN_10EC&DEV_0900&SUBSYS_10438653&REV_1000\4&18233d6a&0&0001

Important Modified Preferences
------------------------------

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 1048576
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.smart_size.first_run: false
browser.download.useDownloadDir: false
browser.sessionstore.upgradeBackup.latestBuildID: 20190516215225
browser.startup.homepage_override.buildID: 20190516215225
browser.startup.homepage_override.mstone: 67.0
browser.tabs.warnOnClose: false
browser.urlbar.placeholderName: Google
browser.urlbar.timesBeforeHidingSuggestionsHint: 0
dom.push.userAgentID: 206604cf1b4b4a29badd84820ec955ca
extensions.lastAppVersion: 67.0
font.default.x-western: sans-serif
font.name.monospace.x-western: Consolas
font.name.sans-serif.x-western: Roboto
font.name.serif.x-western: Crimson Text
gfx.crash-guard.status.wmfvpxvideo: 2
gfx.crash-guard.wmfvpxvideo.appVersion: 67.0
gfx.crash-guard.wmfvpxvideo.deviceID: 0x13c2
gfx.crash-guard.wmfvpxvideo.driverVersion: 23.21.13.9065
idle.lastDailyNotification: 1559325267
layers.mlgpu.sanity-test-failed: false
media.benchmark.vp9.fps: 326
media.benchmark.vp9.versioncheck: 5
media.gmp-gmpopenh264.abi: x86_64-msvc-x64
media.gmp-gmpopenh264.lastUpdate: 1559311753
media.gmp-gmpopenh264.version: 1.8.1
media.gmp-manager.buildID: 20190516215225
media.gmp-manager.lastCheck: 1559313237
media.gmp-widevinecdm.abi: x86_64-msvc-x64
media.gmp-widevinecdm.lastUpdate: 1553928658
media.gmp-widevinecdm.version: 4.10.1146.0
media.gmp.storage.version.observed: 1
media.hardware-video-decoding.failed: false
network.cookie.cookieBehavior: 4
network.dns.disablePrefetch: true
network.http.speculative-parallel-limit: 0
network.predictor.cleaned-up: true
network.predictor.enabled: false
network.prefetch-next: false
places.database.lastMaintenance: 1559325267
places.history.expiration.transient_current_max_pages: 92305
plugin.disable_full_page_plugin_for_types: application/pdf
privacy.donottrackheader.enabled: true
privacy.sanitize.pending: [{"id":"newtab-container","itemsToClear":[],"options":{}}]
privacy.trackingprotection.enabled: true
security.remote_settings.intermediates.checked: 1559366101
security.sandbox.content.tempDirSuffix: {d39eeb47-efc7-4877-bf2d-ae7164fd3a98}
security.sandbox.plugin.tempDirSuffix: {e983c23e-f970-443a-b796-ab436985a665}
services.sync.declinedEngines:
services.sync.engine.prefs.modified: false
services.sync.lastPing: 1559305001
services.sync.lastSync: Sat Jun 01 2019 08:28:49 GMT+0200 (Central European Summer Time)
signon.importedFromSqlite: true
signon.rememberSignons: false
storage.vacuum.last.index: 0
ui.osk.debug.keyboardDisplayReason: IKPOS: Touch screen not found.
ui.osk.enabled: false

Important Locked Preferences
----------------------------

Places Database
---------------

JavaScript
----------

Incremental GC: true

Accessibility
-------------

Activated: false
Prevent Accessibility: 0
Accessible Handler Used: true
Accessibility Instantiator:

Library Versions
----------------

NSPR
Expected minimum version: 4.21
Version in use: 4.21

NSS
Expected minimum version: 3.43
Version in use: 3.43

NSSSMIME
Expected minimum version: 3.43
Version in use: 3.43

NSSSSL
Expected minimum version: 3.43
Version in use: 3.43

NSSUTIL
Expected minimum version: 3.43
Version in use: 3.43

Sandbox
-------

Content Process Sandbox Level: 5
Effective Content Process Sandbox Level: 5

Internationalization & Localization
-----------------------------------

Application Settings
Requested Locales: ["en-US"]
Available Locales: ["en-US"]
App Locales: ["en-US"]
Regional Preferences: ["en-US"]
Default Locale: "en-US"
Operating System
System Locales: ["en-US"]
Regional Preferences: ["en-US"]
Component: Untriaged → Tabbed Browser
Component: Tabbed Browser → Widget: Win32
Product: Firefox → Core

The priority flag is not set for this bug.
:jimm, could you have a look please?

For more information, please visit auto_nag documentation.

Flags: needinfo?(jmathies)
Severity: normal → minor
Priority: -- → P5
See Also: → 1539770
Component: Widget: Win32 → Drag and Drop
Flags: needinfo?(jmathies)
Priority: P5 → --
See Also: → 1550637
See Also: 1539770, 1550637

The priority flag is not set for this bug.
:enndeakin, could you have a look please?

For more information, please visit auto_nag documentation.

Flags: needinfo?(enndeakin)
Flags: needinfo?(enndeakin)
Priority: -- → P5

Just a small update, for what it's worth: about a week or two after filing this bug, I switched to Firefox Nightly and have not been able to replicate it since. It's possible that an unrelated issue fixed it. If no one else has been having a similar problem recently, I think we could safely close this issue.

Another update since it's been 9 months: I can confirm that, while the problem pops up only occasionally, it does still pop up every now and then. When it does, it overlays all other windows except for popups (like Windows' context menu). The only way to get rid of it (apart from restarting the computer) is to restart the Desktop Window Manager.

Severity: minor → S4
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