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Nightly builds (crashes and bug fixes)
This is a staging environment for whattrainisitnow.com

«  Tuesday, February 10, 2026 

#

Outstanding bugs
Bug Component Impact Summary
1395974 Layout 7
priority 3
severity 2
type 2
Assertion failure: aScale >= 0.0f (negative scaling factors must be handled manually)
1652123 Task Configuration 3
type 1
duplicates 2
Replace voluptuous for schema validation in taskgraph.
1968423 JavaScript: WebAssembly 17
priority 5
severity 5
type 2
duplicates 4
cc 1
Ion only writes 32-bits to 64-bit stack result slot, and baseline reads the full slot
1972071 Settings UI 3
type 1
see_also 2
Convert Search Shortcuts to config-based prefs
1975761 Settings UI 2
type 1
see_also 1
Generate a settings page from a group of config-based settings
2004778 General 5
priority 3
type 1
see_also 1
Consider delaying mobile `extensions-late-startup` notification to improve Fenix applink startup
2010409 Application Update 1
type 1
Detect when updater download request is blocked by our WAF
2010675 Privacy: Anti-Tracking 1
type 1
Collect additional WebAudio metrics
2013389 DOM: Content Processes 1
type 1
Eliminate the ClonedMessageData intermediate type for Structured Clone IPC
2014349 Privacy: Anti-Tracking 1
type 1
Add a missing WebGL parameter
2014512 Audio/Video: Playback 4
priority 4
Enable `dom.media.pseudo-classes.enabled` on Nightly
2015490 CSS Parsing and Computation 6
priority 3
severity 2
type 1
Simplify transition shorthand parsing and serialization.
2015523 JavaScript Engine 1
type 1
Add preference and shell option for source phase imports
2015577 Machine Learning: General 1
type 1
add reasoning to memorystore
Other bugs
Bug Component Impact Summary
1517945 Layout 10
priority 4
severity 2
type 2
keywords 2
Firefox Desktop - SVG Image,<marquee> and setAttributeNS Crash (with infinite recursion in ProcessReflowCommands)
1985120 JavaScript: Standard Library 3
priority 3
Remove pref for Uint8Array to/from base64 and hex
1991489 CSS Parsing and Computation 8
severity 2
type 2
duplicates 2
see_also 2
Anchor Positioning Traversals Need to Take fragmentation into account
1995062 Settings UI 0
Convert Backup settings to config-based prefs
2001328 Profile Backup 7
priority 3
severity 2
type 2
Existing backups are not autodetected if user signs in to OneDrive after a backup was previous made in the default location
2006997 IP Protection 1
see_also 1
Handle less than 1 GB used for VPN
2008269 Browser Engine 0
[meta] Deliver content text to summarizers
2008571 Layout: Scrolling and Overflow 9
priority 4
severity 2
type 2
cc 1
Allow scroll snap for APZ pixel mouse wheel scrolls
2012523 CSS Parsing and Computation 0
Implement initial support for CSSNumericValue.parse()
2012536 Machine Learning: Frontend 6
priority 5
see_also 1
Implement Tab switching state mgmt for chat sessions (full/sidebar)
2012780 CSS Transitions and Animations 7
priority 3
severity 2
type 2
Firefox sometimes fails WPT /css/css-view-transitions/fragmented-at-start-ignored.html
2013290 Tabbed Browser: Split View 0
Cancelling a screenshot and then clicking on another tab will show a blank view in the Split View
2013536 Address Bar 0
Go button missing in search bar when dragging text
2013883 Search 0
Search Bar Go button uses previous search engine
2014001 Graphics 12
severity 2
type 2
tracking_firefox149 4
tracking_firefox148 4
src/gfx/2d/ConvolutionFilterAVX2.cpp:57:29: runtime error: load of misaligned address 0x55b0871ad15e for type 'const int32_t' (aka 'const int'), which requires 4 byte alignment
2014617 Graphics: WebGPU 1
priority 1
WebGPU code uses `RefPtr` construction unnecessarily in initializer lists
2014923 Graphics 0
Crash in [@ mozilla::widget::LayerViewSupport::RecvScreenPixels]
2014985 web-platform-tests 0
Update web-platform-tests to 5669aca4a3fc5ea17525a7fcef5cf5444d99aaff
2015098 JavaScript: WebAssembly 3
priority 3
Restrict mozIntGemm to system principal
2015121 Mozbase 2
type 2
On Windows the warning 'The following path(s) didn't resolve any test' is shown for every manifest
2015135 New Tab Page 0
Perma trainhop [tier 2] browser/extensions/newtab/test/browser/browser_customize_menu_content.js | test_render_customizeMenuWeather - A promise chain failed to handle a rejection: can't access property "record", Glean.newtab.widgetsEnabled is undefined
2015178 JavaScript: GC 9
priority 4
severity 1
type 2
keywords 2
Pretenuring report can't handle EnvSitePCOffset
2015273 Keyboard Navigation 0
Support for customizing the Toggle Sidebar (Ctrl+Alt+Z) shortcut
2015275 Keyboard Navigation 0
Support for customizing the Picture-in-Picture (Ctrl+Shift+]) shortcut
2015384 JavaScript Engine 0
Remove unused iterResultWithoutPrototypeTemplate
2015631 Layout 0
Clean up some stale WPT annotation files
2015642 Layout 2
type 2
Clean up trailing newlines in WPT files
2015650 Layout 0
Minor nsSubdocumentFrame clean-up.
2015656 General 0
Update Desktop Beta rollout percentages