1975083 - Audio delay is not respected for fmp4 files served using .m3u8 files in HLS.js

Status: UNCONFIRMED

(Core :: Audio/Video: Playback, defect, P3)

Description

[Landon Deam]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0

Steps to reproduce:

Play a video encoded with an audio start delay using something like Emby/Jellyfin/Plex that relies on HLS.js to play encoded fmp4 files using a .m3u8 playlist.

ffprobe shows these as the relevant tags on the FLAC audio stream:
time_base=1/1000
start_pts=2569
start_time=2.569000

In addition, I can provide a test file, I just do not wish to publicly post it due to copyright concerns.

Actual results:

Audio is desynced from the video, as the start time is not respected.

Expected results:

Audio should play at the same as the video, respecting the start_time tag, as it does in Chromium.

Comment 1

[Landon Deam]

I should also note that the .m3u8 stream encodes the FLAC audio to AAC, which would seem might be semi-related to other, similar, bugs.

Comment 2

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 3

[Mayank Bansal]

Thanks for reporting! To help diagnose this issue better, please can you:

1. Type "about:support" in Firefox and copy-paste its contents here
2. Does this reproduce in a clean profile or Troubleshoot Mode?
3. Capture a log when the issue occurs:

• In Firefox, ideally freshly started with no other tabs, go to about:logging in a new tab
• Select the Media preset
• Enable "stack traces for log messages"
• Click on "Set Log Modules"
• Click Start Logging
• Reproduce the bug
• Back on about:logging, click Stop Logging
• In the new tab that appears with the Firefox Profiler web application, in the top right click the button to upload the profile
• Make sure hidden threads are included and upload, then share the link here or send privately to a Mozilla developer
  -See https://paul.cx/public/about-logging-presentation.webm for a video walk-through

4. If this used to work in an earlier version of Firefox, please do a bisection to find the exact change that caused this (https://mozilla.github.io/mozregression/)

Comment 4

[Mayank Bansal]

Thanks for reporting! To help diagnose this issue better, please can you:

1. Type "about:support" in Firefox and copy-paste its contents here
2. Does this reproduce in a clean profile or Troubleshoot Mode?
3. Capture a log when the issue occurs:

• In Firefox, ideally freshly started with no other tabs, go to about:logging in a new tab
• Select the Media preset
• Enable "stack traces for log messages"
• Click on "Set Log Modules"
• Click Start Logging
• Reproduce the bug
• Back on about:logging, click Stop Logging
• In the new tab that appears with the Firefox Profiler web application, in the top right click the button to upload the profile
• Make sure hidden threads are included and upload, then share the link here or send privately to a Mozilla developer
  -See https://paul.cx/public/about-logging-presentation.webm for a video walk-through

4. If this used to work in an earlier version of Firefox, please do a bisection to find the exact change that caused this (https://mozilla.github.io/mozregression/)

Comment 5

[Landon Deam]

1. See below

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

Name: Firefox
Version: 140.0.1
Build ID: 20250626235620
Distribution ID: archlinux
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0
OS: Linux 6.15.3-zen1-1-zen #1 ZEN SMP PREEMPT_DYNAMIC Thu, 19 Jun 2025 14:41:01 +0000
OS Theme: Breeze / Adwaita
Multiprocess Windows: 2/2
Fission Windows: 2/2 Enabled by default
Remote Processes: 22
Enterprise Policies: Inactive
Google Location Service Key: Found
Google Safebrowsing Key: Found
Mozilla Location Service Key: Missing
Safe Mode: false
Memory Size (RAM): 47.0 GB
Disk Space Available: 150 GB

Crash Reports for the Last 3 Days
---------------------------------

Remote Features
---------------

bug-1802286-rollout-fix-webcompat-shim-breakage-release-103-107: active

Remote Processes
----------------

Type: Isolated Web Content
Count: 13

Type: Preallocated
Count: 3

Type: Socket
Count: 1

Type: Extension
Count: 1

Type: RDD
Count: 1

Type: Privileged About
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Type: Utility JavaScript Oracle
Count: 1

Type: Utility Generic Audio Decoder
Count: 1

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Legacy User Stylesheets
-----------------------

Active: false
Stylesheets: No stylesheets found

Graphics
--------

Features
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Compositing: WebRender
Font Visibility Debug Info: Linux Unknown - ID=arch
Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; autoscroll enabled; smooth pinch-zoom enabled
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WebGL 2 Driver Renderer: AMD -- AMD Radeon RX 7800 XT (radeonsi, navi32, LLVM 20.1.6, DRM 3.63, 6.15.3-zen1-1-zen)
WebGL 2 Driver Version: 4.6 (Core Profile) Mesa 25.1.4-arch1.1
WebGL 2 Driver Extensions: GL_AMD_conservative_depth GL_AMD_depth_clamp_separate GL_AMD_draw_buffers_blend GL_AMD_gpu_shader_int64 GL_AMD_multi_draw_indirect GL_AMD_pinned_memory GL_AMD_query_buffer_object GL_AMD_seamless_cubemap_per_texture GL_AMD_shader_stencil_export GL_AMD_shader_trinary_minmax GL_AMD_texture_texture4 GL_AMD_vertex_shader_layer GL_AMD_vertex_shader_viewport_index GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ARB_ES2_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility GL_ARB_ES3_compatibility 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_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted GL_ARB_conservative_depth 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_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_elements_base_vertex GL_ARB_draw_indirect GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_layer_viewport GL_ARB_fragment_shader GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB 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_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_occlusion_query2 GL_ARB_parallel_shader_compile GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object 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_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_stencil_export GL_ARB_shader_storage_buffer_object GL_ARB_shader_subroutine GL_ARB_shader_texture_image_samples GL_ARB_shader_texture_lod GL_ARB_shader_viewport_layer_array GL_ARB_shading_language_420pack GL_ARB_shading_language_include GL_ARB_shading_language_packing 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_bptc GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map_array 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_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_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_shader GL_ARB_vertex_type_10f_11f_11f_rev GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_ATI_blend_equation_separate GL_ATI_meminfo GL_ATI_texture_float GL_ATI_texture_mirror_once GL_EXT_EGL_image_storage GL_EXT_EGL_image_storage_compression GL_EXT_EGL_sync GL_EXT_abgr GL_EXT_blend_equation_separate GL_EXT_debug_label GL_EXT_demote_to_helper_invocation GL_EXT_depth_bounds_test GL_EXT_draw_buffers2 GL_EXT_draw_instanced GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_memory_object GL_EXT_memory_object_fd GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_pixel_buffer_object GL_EXT_polygon_offset_clamp GL_EXT_provoking_vertex GL_EXT_semaphore GL_EXT_semaphore_fd GL_EXT_shader_image_load_formatted GL_EXT_shader_image_load_store GL_EXT_shader_integer_mix GL_EXT_texture_array GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_filter_minmax GL_EXT_texture_integer GL_EXT_texture_mirror_clamp GL_EXT_texture_sRGB GL_EXT_texture_sRGB_R8 GL_EXT_texture_sRGB_RG8 GL_EXT_texture_sRGB_decode GL_EXT_texture_shadow_lod GL_EXT_texture_shared_exponent GL_EXT_texture_snorm GL_EXT_texture_storage GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback GL_EXT_vertex_array_bgra GL_EXT_vertex_attrib_64bit GL_EXT_window_rectangles GL_IBM_multimode_draw_arrays GL_INTEL_blackhole_render GL_KHR_blend_equation_advanced GL_KHR_context_flush_control GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_KHR_shader_subgroup GL_KHR_texture_compression_astc_ldr GL_KHR_texture_compression_astc_sliced_3d GL_MESA_framebuffer_flip_y GL_MESA_pack_invert GL_MESA_shader_integer_functions GL_MESA_texture_const_bandwidth GL_MESA_texture_signed_rgba GL_NVX_gpu_memory_info GL_NV_alpha_to_coverage_dither_control GL_NV_compute_shader_derivatives GL_NV_conditional_render GL_NV_copy_image GL_NV_depth_clamp GL_NV_packed_depth_stencil GL_NV_shader_atomic_int64 GL_NV_texture_barrier GL_NV_vdpau_interop GL_OES_EGL_image GL_S3_s3tc
WebGL 2 Extensions: EXT_color_buffer_float EXT_depth_clamp EXT_float_blend EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_draw_buffers_indexed OES_texture_float_linear WEBGL_compressed_texture_astc WEBGL_compressed_texture_etc WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
Window Protocol: wayland
Desktop Environment: kde
Target Frame Rate: 60
WebGPU Default Adapter: { "navigator.gpu": null }
WebGPU Fallback Adapter: { "navigator.gpu": null }
GPU #1
Active: Yes
Description: AMD Radeon RX 7800 XT (radeonsi, navi32, LLVM 20.1.6, DRM 3.63, 6.15.3-zen1-1-zen)
Vendor ID: 0x1002
Device ID: 0x747e
Driver Vendor: mesa/radeonsi
Driver Version: 25.1.4.0
RAM: 0

Diagnostics
AzureCanvasBackend: skia
AzureContentBackend: skia
AzureFallbackCanvasBackend: skia
CMSOutputProfile: Empty profile data
Display0: 1920x1080@165Hz scales:1.000000|1.000000
Display1: 1920x1080@60Hz scales:1.000000|1.000000
DisplayCount: 2
Font Visibility Debug Info: Linux Unknown - ID=arch
Decision Log
HW_COMPOSITING:
default: available,
OPENGL_COMPOSITING:
default: available,
WEBRENDER:
default: available,
WEBRENDER_COMPOSITOR:
default: disabled, Disabled by default, Blocklisted; failure code FEATURE_FAILURE_DISABLED
env: blocklisted, Blocklisted by gfxInfo, Blocklisted; failure code FEATURE_FAILURE_WEBRENDER_COMPOSITOR_DISABLED
WEBRENDER_PARTIAL:
default: available,
WEBRENDER_SHADER_CACHE:
default: disabled, Disabled by default, Blocklisted; failure code FEATURE_FAILURE_DISABLED
WEBRENDER_OPTIMIZED_SHADERS:
default: available,
WEBRENDER_ANGLE:
default: available,
env: unavailable, OS not supported, Blocklisted; failure code FEATURE_FAILURE_OS_NOT_SUPPORTED
WEBRENDER_DCOMP_PRESENT:
default: available,
user: disabled, User disabled via pref, Blocklisted; failure code FEATURE_FAILURE_DCOMP_PREF_DISABLED
env: unavailable, Requires GPU process, Blocklisted; failure code FEATURE_FAILURE_NO_GPU_PROCESS
runtime: unavailable, Requires ANGLE, Blocklisted; failure code FEATURE_FAILURE_DCOMP_NOT_ANGLE
WEBRENDER_SCISSORED_CACHE_CLEARS:
default: available,
WEBGPU:
default: available,
runtime: blocked, WebGPU cannot be enabled unless in Nightly, or Early Beta on Wi, Blocklisted; failure code WEBGPU_DISABLE_RELEASE_OR_NON_WINDOWS_EARLY_BETA
X11_EGL:
default: available,
DMABUF:
default: available,
HARDWARE_VIDEO_DECODING:
default: available,
HW_DECODED_VIDEO_ZERO_COPY:
default: available,
VP8_HW_DECODE:
default: available,
env: blocklisted, #BLOCKLIST_FEATURE_FAILURE_VIDEO_DECODING_MISSING, Blocklisted; failure code FEATURE_FAILURE_VIDEO_DECODING_MISSING
VP9_HW_DECODE:
default: available,
DMABUF_SURFACE_EXPORT:
default: available,
env: blocked, Blocklisted by gfxInfo, Blocklisted; failure code FEATURE_FAILURE_BROKEN_DRIVER
BACKDROP_FILTER:
default: available,
CANVAS_RENDERER_THREAD:
default: available,
ACCELERATED_CANVAS2D:
default: available,
H264_HW_DECODE:
default: available,
AV1_HW_DECODE:
default: available,
HEVC_HW_DECODE:
default: available,
REMOTE_CANVAS:
default: disabled, Disabled via pref, Blocklisted; failure code FEATURE_FAILURE_DISABLED
env: unavailable-no-gpu-process, Disabled without GPU process, Blocklisted; failure code FEATURE_REMOTE_CANVAS_NO_GPU_PROCESS
runtime: blocked, Platform not supported, Blocklisted; failure code FEATURE_REMOTE_CANVAS_NOT_WINDOWS
DMABUF_WEBGL:
default: available,


Failure Log
(#0) Error: RenderCompositorSWGL failed mapping default framebuffer, no dt

Media
-----

Audio Backend: pulse-rust
Max Channels: 2
Preferred Sample Rate: 48000
Roundtrip latency (standard deviation): 89.67ms (11.38)
Codec Support Information:
Codec Name: Software Decoding, Hardware Decoding
H264: Supported, Supported
VP9: Supported, Supported
VP8: Supported, Unsupported
AV1: Supported, Supported
HEVC: Supported, Supported
AAC: Supported, Unsupported
MP3: Supported, Unsupported
Opus: Supported, Unsupported
Vorbis: Supported, Unsupported
FLAC: Supported, Unsupported
Wave: Supported, Unsupported
Output Devices
Name: Group, Vendor, State, Preferred, Format, Channels, Rate, Latency
Scarlett 2i2 3rd Gen Direct Scarlett 2i2 USB: /devices/pci0000:00/0000:00:01.3/0000:02:00.0/usb1/1-5/1-5:1.0/sound/card0, Focusrite-Novation, Enabled, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
Starship/Matisse HD Audio Controller Digital Stereo (IEC958): /devices/pci0000:00/0000:00:08.1/0000:0b:00.4/sound/card2, Advanced Micro Devices, Inc. [AMD], Enabled, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
general Audio/Sink sink: Enabled, All, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
discord Audio/Sink sink: Enabled, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
Navi 31 HDMI/DP Audio Digital Stereo (HDMI): /devices/pci0000:00/0000:00:03.1/0000:07:00.0/0000:08:00.0/0000:09:00.1/sound/card1, Advanced Micro Devices, Inc. [AMD/ATI], Enabled, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
Input Devices
Name: Group, Vendor, State, Preferred, Format, Channels, Rate, Latency
Monitor of Scarlett 2i2 3rd Gen Direct Scarlett 2i2 USB: /devices/pci0000:00/0000:00:01.3/0000:02:00.0/usb1/1-5/1-5:1.0/sound/card0, Focusrite-Novation, Enabled, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
Scarlett 2i2 3rd Gen Direct Scarlett 2i2 USB: /devices/pci0000:00/0000:00:01.3/0000:02:00.0/usb1/1-5/1-5:1.0/sound/card0, Focusrite-Novation, Enabled, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
Valve VR Radio & HMD Mic Mono: /devices/pci0000:00/0000:00:08.1/0000:0b:00.3/usb3/3-2/3-2.3/3-2.3.3/3-2.3.3:1.1/sound/card3, Valve Software, Enabled, None, default: S16LE, support: S16LE S16BE F32LE F32BE, 1, default: 48000, support: 1 - 384000, 0 - 0
Monitor of Starship/Matisse HD Audio Controller Digital Stereo (IEC958): /devices/pci0000:00/0000:00:08.1/0000:0b:00.4/sound/card2, Advanced Micro Devices, Inc. [AMD], Enabled, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
Starship/Matisse HD Audio Controller Analog Stereo: /devices/pci0000:00/0000:00:08.1/0000:0b:00.4/sound/card2, Advanced Micro Devices, Inc. [AMD], Unplugged, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
Monitor of general Audio/Sink sink: Enabled, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
Monitor of discord Audio/Sink sink: Enabled, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
microphone Audio/Source/Virtual sink: Enabled, All, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0
Monitor of Navi 31 HDMI/DP Audio Digital Stereo (HDMI): /devices/pci0000:00/0000:00:03.1/0000:07:00.0/0000:08:00.0/0000:09:00.1/sound/card1, Advanced Micro Devices, Inc. [AMD/ATI], Enabled, None, default: F32LE, support: S16LE S16BE F32LE F32BE, 2, default: 48000, support: 1 - 384000, 0 - 0

Enumerate database
Content Decryption Modules Information
Key System Name: Video Robustness, Audio Robustness, Capabilities, Clear Lead, HDCP 2.2 Compatible
org.w3.clearkey: {"persistent":"Optional","distinctive":"NotAllowed","sessionType":"[Temporary]","codec":{"decodingAndDecrypting":[],"decryptingOnly":["h264(all)","aac(all)","flac(all)","opus(all)","vp9(all)","av1(all)","vorbis(all)","vp8(all)"]}}, No, No
com.widevine.alpha: SW_SECURE_CRYPTO,SW_SECURE_DECODE, SW_SECURE_CRYPTO, {"persistent":"Optional","distinctive":"NotAllowed","sessionType":"[Temporary]","codec":{"decodingAndDecrypting":["h264(all)","vp9(all)","av1(all)","vp8(all)"],"decryptingOnly":["aac(all)","flac(all)","opus(all)","vorbis(all)"]}}, Yes, No

Environment Variables
---------------------

DISPLAY: :0
MOZ_ASSUME_USER_NS: 1
MOZ_CRASHREPORTER_EVENTS_DIRECTORY: /home/landon/.mozilla/firefox/2bp2k06k.default-release/crashes/events
MOZ_CRASHREPORTER_RESTART_ARG_1:
MOZ_CRASHREPORTER_DATA_DIRECTORY: /home/landon/.mozilla/firefox/Crash Reports
MOZ_CRASHREPORTER_PING_DIRECTORY: /home/landon/.mozilla/firefox/Pending Pings
MOZ_CRASHREPORTER_STRINGS_OVERRIDE: /usr/lib/firefox/browser/crashreporter-override.ini
MOZ_LAUNCHED_CHILD:
MOZ_APP_SILENT_START:
XRE_PROFILE_PATH:
XRE_PROFILE_LOCAL_PATH:
XRE_START_OFFLINE:
XRE_BINARY_PATH:
XRE_RESTARTED_BY_PROFILE_MANAGER:

Remote Settings
---------------

Status: OK Not working

Status: 2025-07-02T19:17:35.000Z

Status: "1751481375139"

Status: Status Date Infos successWed Jul 02 2025 14:36:15 GMT-0400 (Eastern Daylight Time){}successWed Jul 02 2025 14:07:53 GMT-0400 (Eastern Daylight Time){}successTue Jul 01 2025 22:57:10 GMT-0400 (Eastern Daylight Time){}successTue Jul 01 2025 21:58:11 GMT-0400 (Eastern Daylight Time){}successTue Jul 01 2025 18:32:11 GMT-0400 (Eastern Daylight Time){}successTue Jul 01 2025 17:29:40 GMT-0400 (Eastern Daylight Time){}successTue Jul 01 2025 16:59:10 GMT-0400 (Eastern Daylight Time){}successTue Jul 01 2025 15:59:48 GMT-0400 (Eastern Daylight Time){}successTue Jul 01 2025 14:56:50 GMT-0400 (Eastern Daylight Time){}successTue Jul 01 2025 14:42:32 GMT-0400 (Eastern Daylight Time){}
Date: success
Infos: Wed Jul 02 2025 14:36:15 GMT-0400 (Eastern Daylight Time)
{}
success
Wed Jul 02 2025 14:07:53 GMT-0400 (Eastern Daylight Time)
{}
success
Tue Jul 01 2025 22:57:10 GMT-0400 (Eastern Daylight Time)
{}
success
Tue Jul 01 2025 21:58:11 GMT-0400 (Eastern Daylight Time)
{}
success
Tue Jul 01 2025 18:32:11 GMT-0400 (Eastern Daylight Time)
{}
success
Tue Jul 01 2025 17:29:40 GMT-0400 (Eastern Daylight Time)
{}
success
Tue Jul 01 2025 16:59:10 GMT-0400 (Eastern Daylight Time)
{}
success
Tue Jul 01 2025 15:59:48 GMT-0400 (Eastern Daylight Time)
{}
success
Tue Jul 01 2025 14:56:50 GMT-0400 (Eastern Daylight Time)
{}
success
Tue Jul 01 2025 14:42:32 GMT-0400 (Eastern Daylight Time)
{}

Status: success
Date: Wed Jul 02 2025 14:36:15 GMT-0400 (Eastern Daylight Time)
Infos: {}

Status: success
Date: Wed Jul 02 2025 14:07:53 GMT-0400 (Eastern Daylight Time)
Infos: {}

Status: success
Date: Tue Jul 01 2025 22:57:10 GMT-0400 (Eastern Daylight Time)
Infos: {}

Status: success
Date: Tue Jul 01 2025 21:58:11 GMT-0400 (Eastern Daylight Time)
Infos: {}

Status: success
Date: Tue Jul 01 2025 18:32:11 GMT-0400 (Eastern Daylight Time)
Infos: {}

Status: success
Date: Tue Jul 01 2025 17:29:40 GMT-0400 (Eastern Daylight Time)
Infos: {}

Status: success
Date: Tue Jul 01 2025 16:59:10 GMT-0400 (Eastern Daylight Time)
Infos: {}

Status: success
Date: Tue Jul 01 2025 15:59:48 GMT-0400 (Eastern Daylight Time)
Infos: {}

Status: success
Date: Tue Jul 01 2025 14:56:50 GMT-0400 (Eastern Daylight Time)
Infos: {}

Status: success
Date: Tue Jul 01 2025 14:42:32 GMT-0400 (Eastern Daylight Time)
Infos: {}

Remote Experiments
------------------

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

accessibility.browsewithcaret: true
accessibility.typeaheadfind.flashBar: 0
browser.contentblocking.category: custom
browser.download.useDownloadDir: false
browser.search.region: US
browser.sessionstore.upgradeBackup.latestBuildID: 20250626235620
browser.startup.homepage_override.buildID: 20250626235620
browser.startup.homepage_override.mstone: 140.0.1
browser.tabs.inTitlebar: 0
browser.urlbar.placeholderName: DuckDuckGo
browser.urlbar.placeholderName.private: DuckDuckGo
browser.urlbar.quicksuggest.migrationVersion: 2
browser.urlbar.quicksuggest.scenario: offline
browser.urlbar.suggest.bookmark: false
browser.urlbar.suggest.engines: false
browser.urlbar.suggest.history: false
browser.urlbar.suggest.openpage: false
browser.urlbar.suggest.quicksuggest.nonsponsored: false
browser.urlbar.suggest.quicksuggest.sponsored: false
browser.urlbar.suggest.topsites: false
browser.urlbar.tipShownCount.searchTip_onboard: 4
browser.urlbar.tipShownCount.searchTip_persist: 4
browser.urlbar.tipShownCount.searchTip_redirect: 4
doh-rollout.disable-heuristics: true
doh-rollout.doneFirstRun: true
doh-rollout.home-region: US
doh-rollout.uri: https://mozilla.cloudflare-dns.com/dns-query
dom.forms.autocomplete.formautofill: true
dom.ipc.processCount: 4
dom.security.https_only_mode_ever_enabled: true
dom.security.https_only_mode_ever_enabled_pbm: true
dom.security.https_only_mode_pbm: true
extensions.formautofill.addresses.enabled: false
extensions.formautofill.creditCards.enabled: false
extensions.formautofill.creditCards.reauth.optout: MDIEEPgAAAAAAAAAAAAAAAAAAAEwFAYIKoZIhvcNAwcECGFAL9sXE8RxBAidrmSzYqkjSg==
extensions.lastAppVersion: 140.0.1
gfx.blacklist.accelerated-canvas2d.failureid: FEATURE_FAILURE_DL_BLOCKLIST_NO_ID
idle.lastDailyNotification: 1751405007
media.benchmark.vp9.fps: 24
media.benchmark.vp9.versioncheck: 5
media.eme.enabled: true
media.gmp-gmpopenh264.abi: x86_64-gcc3
media.gmp-gmpopenh264.hashValue: f5246bf14d038adf4ce0c4360262ab722bc3de4220f047c3d542b4c564074b4877dc8659e3125c5171c749e7ce93f20cc63777eb5e1539e960670cbc
media.gmp-gmpopenh264.lastDownload: 1743377871
media.gmp-gmpopenh264.lastDownloadFailed: 1682019978
media.gmp-gmpopenh264.lastDownloadFailReason: Error: Failed downloading via ServiceRequest, status: 0, reason: error
media.gmp-gmpopenh264.lastInstallStart: 1743377870
media.gmp-gmpopenh264.lastUpdate: 1743377871
media.gmp-gmpopenh264.version: 2.6.0
media.gmp-manager.buildID: 20250626235620
media.gmp-manager.lastCheck: 1751402801
media.gmp-manager.lastEmptyCheck: 1751402801
media.gmp-widevinecdm.abi: x86_64-gcc3
media.gmp-widevinecdm.hashValue: f12ff815141099000ef7027b406260f0a515c544209b9fe8125ea5f4ddbf58601d30222ac41a013eb0a43da76ba70414a4ad16617d9f219f19cdfc77
media.gmp-widevinecdm.lastDownload: 1743377873
media.gmp-widevinecdm.lastInstallStart: 1743377870
media.gmp-widevinecdm.lastUpdate: 1743377873
media.gmp-widevinecdm.version: 4.10.2891.0
media.gmp.storage.version.observed: 1
media.videocontrols.picture-in-picture.video-toggle.has-used: true
media.webspeech.synth.dont_notify_on_error: true
network.cookie.cookieBehavior.optInPartitioning: true
network.dns.disablePrefetch: true
network.http.referer.disallowCrossSiteRelaxingDefault.top_navigation: true
network.http.speculative-parallel-limit: 0
network.predictor.enabled: false
network.prefetch-next: false
network.security.ports.banned.override: 10080
network.trr.mode: 5
places.database.lastMaintenance: 1751405007
places.history.enabled: false
privacy.annotate_channels.strict_list.enabled: true
privacy.bounceTrackingProtection.hasMigratedUserActivationData: true
privacy.bounceTrackingProtection.mode: 1
privacy.clearHistory.siteSettings: true
privacy.clearOnShutdown_v2.formdata: true
privacy.clearOnShutdown.downloads: false
privacy.clearOnShutdown.formdata: false
privacy.clearOnShutdown.history: false
privacy.clearOnShutdown.offlineApps: true
privacy.clearOnShutdown.sessions: false
privacy.cpd.offlineApps: true
privacy.cpd.siteSettings: true
privacy.donottrackheader.enabled: true
privacy.fingerprintingProtection: true
privacy.globalprivacycontrol.enabled: true
privacy.globalprivacycontrol.was_ever_enabled: true
privacy.history.custom: true
privacy.purge_trackers.date_in_cookie_database: 0
privacy.purge_trackers.last_purge: 1751405007666
privacy.query_stripping.enabled: true
privacy.query_stripping.enabled.pbmode: true
privacy.resistFingerprinting.exemptedDomains: *.discord.com
privacy.sanitize.clearOnShutdown.hasMigratedToNewPrefs3: true
privacy.sanitize.cpd.hasMigratedToNewPrefs2: true
privacy.sanitize.pending: [{"id":"shutdown","itemsToClear":["cache","formdata","browsingHistoryAndDownloads","cookiesAndStorage"],"options":{}},{"
privacy.sanitize.sanitizeOnShutdown: true
privacy.sanitize.timeSpan: 0
privacy.trackingprotection.emailtracking.enabled: true
privacy.trackingprotection.enabled: true
privacy.trackingprotection.socialtracking.enabled: true
privacy.userContext.enabled: true
privacy.userContext.ui.enabled: true
security.sandbox.content.tempDirSuffix: 6eff5ca1-0b80-4b42-aaf0-9e6befe166bd
services.sync.declinedEngines:
services.sync.engine.addresses.available: true
signon.autofillForms: false
signon.firefoxRelay.feature: disabled
signon.generation.enabled: false
signon.management.page.breach-alerts.enabled: false
signon.management.page.os-auth.optout: MDIEEPgAAAAAAAAAAAAAAAAAAAEwFAYIKoZIhvcNAwcECJbHdiQ02+a8BAh1CNh4Exp3rw==
signon.rememberSignons: false
storage.vacuum.last.content-prefs.sqlite: 1751405007
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1751230216

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

fission.autostart.session: true

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

Entity: sqlite_schema
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 27.8
Sequentiality (%): 100

Entity: moz_origins
Count: 11
Size (KiB): 32
Size (%): 2
Efficiency (%): 1.3
Sequentiality (%): 100

Entity: sqlite_autoindex_moz_origins_1
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 1.2
Sequentiality (%): 100

Entity: moz_places
Count: 16
Size (KiB): 32
Size (%): 2
Efficiency (%): 5.9
Sequentiality (%): 100

Entity: moz_historyvisits
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_inputhistory
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: sqlite_autoindex_moz_inputhistory_1
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_bookmarks
Count: 24
Size (KiB): 32
Size (%): 2
Efficiency (%): 4.4
Sequentiality (%): 100

Entity: moz_bookmarks_deleted
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: sqlite_autoindex_moz_bookmarks_deleted_1
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_keywords
Count: 1
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.1
Sequentiality (%): 100

Entity: sqlite_autoindex_moz_keywords_1
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: sqlite_sequence
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.1
Sequentiality (%): 100

Entity: moz_anno_attributes
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: sqlite_autoindex_moz_anno_attributes_1
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_annos
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_items_annos
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_meta
Count: 5
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.6
Sequentiality (%): 100

Entity: moz_places_metadata
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_places_metadata_search_queries
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: sqlite_autoindex_moz_places_metadata_search_queries_1
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_previews_tombstones
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: sqlite_stat1
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 3
Sequentiality (%): 100

Entity: moz_places_extra
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_historyvisits_extra
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_places_url_hashindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.7
Sequentiality (%): 100

Entity: moz_places_hostindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 1.3
Sequentiality (%): 100

Entity: moz_places_visitcount
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.4
Sequentiality (%): 100

Entity: moz_places_frecencyindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.5
Sequentiality (%): 100

Entity: moz_places_lastvisitdateindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.4
Sequentiality (%): 100

Entity: moz_places_guid_uniqueindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 1
Sequentiality (%): 100

Entity: moz_places_originidindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.5
Sequentiality (%): 100

Entity: moz_historyvisits_placedateindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_historyvisits_fromindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_historyvisits_dateindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_bookmarks_itemindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.7
Sequentiality (%): 100

Entity: moz_bookmarks_parentindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.7
Sequentiality (%): 100

Entity: moz_bookmarks_itemlastmodifiedindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 1.3
Sequentiality (%): 100

Entity: moz_bookmarks_dateaddedindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 1.1
Sequentiality (%): 100

Entity: moz_bookmarks_guid_uniqueindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 1.4
Sequentiality (%): 100

Entity: moz_keywords_placepostdata_uniqueindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.1
Sequentiality (%): 100

Entity: moz_annos_placeattributeindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_items_annos_itemattributeindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_places_metadata_placecreated_uniqueindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_places_metadata_referrerindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_places_altfrecencyindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0.4
Sequentiality (%): 100

Entity: moz_newtab_story_click
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_newtab_story_impression
Count: 0
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_newtab_story_click_newtab_click_timestampindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

Entity: moz_newtab_story_impression_newtab_impression_timestampindex
Count: -
Size (KiB): 32
Size (%): 2
Efficiency (%): 0
Sequentiality (%): 100

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

Activated: false
Prevent Accessibility: 0

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

NSPR
Expected minimum version: 4.36
Version in use: 4.36

NSS
Expected minimum version: 3.113 Beta
Version in use: 3.113 Beta

NSSSMIME
Expected minimum version: 3.113 Beta
Version in use: 3.113 Beta

NSSSSL
Expected minimum version: 3.113 Beta
Version in use: 3.113 Beta

NSSUTIL
Expected minimum version: 3.113 Beta
Version in use: 3.113 Beta

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: 6
Effective Content Process Sandbox Level: 6

Rejected System Calls
---------------------

Startup Cache
-------------

Disk Cache Path: /home/landon/.cache/mozilla/firefox/2bp2k06k.default-release/startupCache/startupCache.8.little
Ignore Disk Cache: false
Found Disk Cache on Init: true
Wrote to Disk Cache: false

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"]

Remote Debugging (Chromium Protocol)
------------------------------------

Accepting Connections: false
URL:

Printing
--------

Modified print settings
-----------------------

print_printer: Mozilla Save to PDF

Content Analysis (DLP)
----------------------

Active: false
Connected to Agent:
Agent Path:
Agent Failed Signature Verification:
Request Count:

2. This does reproduce in a clean profile.
3. https://share.firefox.dev/40AOwrL
4. I don't know if this worked in an earlier version or not.

Comment 6

[BugBot [:suhaib / :marco]]

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

For more information, please visit BugBot documentation.

Comment 7

[Jim Mathies [:jimm]]

No sure what the start time value is, but maybe something we're missing support for.

Comment 8

[Landon Deam]

A workaround was found in downstream by just adding in one of the other delay flags, not sure if it would make sense to replicate here or not
https://github.com/jellyfin/jellyfin/pull/14553