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

«  Wednesday, August 27, 2025 

#

Outstanding bugs
Bug Component Impact Summary
1395426 Lint and Formatting 7
priority 4
severity 2
type 1
Eslint globals reference doesn't work for bug 1349689 (cyclic dependencies with import-globals-from)
1423768 Widget: Win32 8
priority 3
severity 2
type 2
cc 1
Firefox chooses the last focused window on a different virtual desktop when opening a new link instead of the last focused window on the current virtual desktop
1788937 MathML 2
type 1
see_also 1
Implement font-family: math
1824189 XPCOM 4
type 1
see_also 3
Consider adding a non-leaking (fallible) variant of `nsIEventTarget::Dispatch`
1962220 Startup and Profile System 9
priority 5
severity 2
type 1
see_also 1
Avoid showing the "set Firefox to default?" alert in additional profiles
1973509 Layout: Positioned 6
priority 3
severity 2
type 1
Reflow Anchor Positioned frames during the container query pass
1983148 mozperftest 11
priority 5
severity 5
type 1
Create full mobile startup parity with android startup tests
1985173 Graphics: Text 1
type 1
Update harfbuzz to new version 11.4.4 from 2025-08-26 00:57:35
1985199 General 1
type 1
Update android nightly application-services version bump to new version 866b71160e388954f90290ba0572e5ef63ee6915 from 2025-08-26 05:03:39
Other bugs
Bug Component Impact Summary
1784963 DOM: Networking 9
priority 3
severity 2
type 2
duplicates 2
Intermittent dom/tests/mochitest/beacon/test_beaconFrame.html | single tracking bug
1813675 Address Bar 0
Intermittent browser/components/urlbar/tests/browser/browser_tabKeyBehavior.js | single tracking bug
1880779 Toolchains 1
cc 1
Update build sysroot to a C++20-compatible version of libstdc++
1928493 JavaScript Engine 4
priority 4
Remove pref for Promise.try
1944290 Lint and Formatting 4
priority 4
Upgrade to ESLint v9.34.0 (support for Import attributes & more)
1950173 JavaScript: GC 4
priority 4
Heap iteration depends on GC callbacks not starting an incremental GC
1958371 General 0
Reduce gecko header-header includes Apr2025
1959389 DOM: Navigation 2
duplicates 2
Handle initiating and aborting navigations
1960002 Startup and Profile System 11
priority 4
severity 5
type 2
keywords 2
regressions -2
Window control buttons(Minimize/Maximize/Close) are cut off when browser window width is reduced with Menu Bar.
1961982 Applications: MozharnessCore 6
type 2
keywords 2
duplicates 2
`mach python-test` deletes source files: whole build/ dir + some files in testing/mozbase/mozproxy
1965465 Agent -1
priority 3
regressions -4
[wdspec] 2025-Q3 Clean-up meta data for multiple statuses
1967652 Audio/Video: Playback 8
priority 4
severity 2
type 2
Report MP4TrackDemuxer failure rather than leaving the media element waiting for data
1969980 General -2
regressions -2
Remove 24 snackbars marked for removal
1971392 CSS Parsing and Computation 6
priority 1
severity 1
type 2
duplicates 2
Perma /css/CSS2/generated-content/quotes-applies-to-<00x>..xht | Testing http://web-platform.test:8000/css/CSS2/generated-content/quotes-applies-to-001.xht == | single tracking bug
1971628 Settings UI 0
Convert Website Appearance and Browser Appearance to config-based prefs
1973858 Shell Integration 3
priority 3
Validate safety of `createWindowsIcon` before enabling TaskbarTabs
1973985 WebRTC: Audio/Video 4
priority 4
Don't deliver frames exceeding the constrained max framerate over PCameras
1978017 Site Permissions 5
priority 5
Update PermissionUI.sys.mjs with learn more url for LNA
1979906 Privacy 4
severity 2
type 2
Memory leak detected when the user opens the app after closing a private custom tab flow
1980565 Graphics: WebRender 0
Add fuzzy to web-platform test during enabling WebRender dithering
1980804 WebRTC 8
priority 4
severity 2
type 2
RTCStatsIceCandidatePairState's `inprogress` does not match the spec
1981187 Graphics: WebGPU 5
priority 5
Flush queued messages based on nr of messages
1981209 XPCShell Harness 11
priority 5
severity 2
type 2
duplicates 2
many android emulator debug xpcshell tests fail when run on the new android 14 emulator
1981225 Graphics: WebGPU 5
priority 5
Improve architecture of DOM wrapper objects
1981329 New Tab Page 12
priority 5
severity 5
type 2
After disabling and re-enabling widgets via the Customize option they no longer appear in HNT
1982469 CSS Parsing and Computation 7
priority 3
severity 2
type 2
Assertion failure: aIsRoot == isRootSlow, at /builds/worker/checkouts/gecko/dom/base/nsINode.cpp:275
1982900 Shell Integration 8
priority 3
severity 2
type 2
see_also 1
Disable Taskbar Tabs for MSIX installs
1983061 Security: Process Sandboxing 4
severity 2
type 2
SandboxFilter.cpp:1359:36: error: use of undeclared identifier 'TCGETS2'
1983069 JavaScript: WebAssembly 7
priority 3
severity 2
type 2
ARCH_BITS in wasm::ObservedCPUFeatures should be increased to four
1983138 Async Tooling 9
priority 5
severity 1
type 2
see_also 1
subprocess_worker.win.js: read & write: libc.winLastError should be ctypes.winLastError
1983194 Widget: Gtk 4
type 2
keywords 2
Crash in [@ mozilla::gl::GLContext::IsCurrent] via DMABufSurfaceYUV::VerifyTextureCreation
1983361 Task Configuration 0
Add some recent distros for bootstrap tasks
1983512 DOM: Core & HTML 4
severity 2
type 2
Make command events not composed
1983523 DOM: Core & HTML 0
Enable `dom.element.commandfor.enabled` by default
1983557 Onboarding 4
priority 4
Enable A/B testing of current and redesigned onboarding flows controlled by Nimbus
1983736 Glean: SDK 9
priority 5
type 2
duplicates 2
[python 3.14] Perma TypeError: unhashable type: 'dict'
1983857 New Tab Page 0
newtab trainhop beta and release jobs should run on autoland and mozilla-central on Linux, macOS and Windows.
1983924 Tabs 0
[Tab Management Phase 1] Add icon to "Make inactive" menu item and update its string
1984034 IP Protection 4
severity 2
type 2
The "Firefox VPN" toolbar icon state is ON even if the user is Signed out
1984059 web-platform-tests 0
Update web-platform-tests to cb96a34d90f80b72be93211fe65926c59acfefdd
1984102 XPCOM 0
Consider re-introducing some of the AutoTArray-specific optimizations in nsTArray
1984104 DOM: Navigation 0
Run success steps after committed promise has resolved.
1984169 Crash Reporting 2
type 2
MozillaSocorroService.kt:375:13 'internal' declaration exposes 'public/*package*/' type containing declaration 'CrashReport' with Kotlin 2.2.20
1984329 General 3
priority 3
Add support for services resource aliases to 'mach use_moz_src'
1984330 Sync 0
Migrate services/crypto to use moz-src URIs
1984331 Marionette 0
Perma [tier 2] Headless TEST-UNEXPECTED-OK | /webdriver/tests/interop/beforeunload_prompt.py | expected TIMEOUT
1984435 Toolbar 2
duplicates 2
New tab button should work correctly when home page as new tab or home page search bar is enabled
1984462 Search 0
Remove or update probes expiring at the end of Firefox 144: browser.searchinit.secure_opensearch_* before Gecko version gets increase to 145 on 2025-09-15
1984474 Downloads 5
severity 2
type 2
see_also 1
AbstractFetchDownloadServiceTest.WHEN clearAllDownloadsNotificationsAndJobs is called THEN all non-completed downloads are cancelled does not correctly test the expected behaviour
1984549 Graphics: WebRender 0
Enable hardware WebRender linear gradient dithering in Nightly
1984635 Layout 2
type 2
keywords 2
regressions -2
Rendering 4th recursive iframe (here in ABABA case) broken
1984639 Experimentation and Telemetry 2
type 2
Fix logic for no_shortcuts_stories_mkt based on TPM feedback
1984660 Graphics: WebGPU 0
1.2% installer size (Windows) regression on Mon August 18 2025
1984795 Machine Learning 4
severity 2
type 2
"New" badge for `Summarize page` is hard-coded in English
1984832 Inspector: Rules 0
Perma [tier 2] devtools/client/inspector/rules/test/browser_rules_edit-value-after-name_02.js | Node is not accessible via accessibility API: id: , tagName: div, className: ruleview-propertycontainer -
1984889 Site Permissions 5
priority 5
Change LNA permission prompt text for remembering user decision.
1984929 Layout: Positioned 2
type 2
Make anchor-scroll-position-try-[007|008] properly fail on mobile environments
1985002 Task Configuration 4
priority 1
severity 1
type 2
Ubuntu 24.04 x86 shippable job seemingly has no libnotify
1985029 Protections UI 4
type 2
keywords 2
Mobile card from about:protections spills out of its container (looking like bottom padding is missing), with updates to CSS grid percentage row-sizing behavior
1985060 DOM: Navigation 0
Bring back navigate-push-javascript-url.html
1985072 Enterprise Policies 2
type 2
Tweak new Tracking Protection Exceptions UX policy
1985073 Graphics: Canvas2D 4
type 2
keywords 2
The offscreen canvas placeholder triggers a MOZ_CRASH about thread safety
1985074 New Tab Page 2
type 2
Customize Panel widget toggle buttons disappear on restart (if widgets are turned off)
1985078 CSS Parsing and Computation 0
22.62% perf_reftest_singletons insert-subtree-not-nth-edge-has-pseudo.html (Linux) regression on Tue August 19 2025
1985100 XPConnect 0
remove the Cu.now implementation
1985138 DOM: Core & HTML 4
priority 1
severity 1
type 2
Perma /html/cross-origin-embedder-policy/require-corp-load-from-cache-storage.https.html | Fetch cross-origin no-cors cors-disabled corp-undefined from network and CacheStorage. - promise_rejects_js: function "function() { thr
1985156 Tabbed Browser 0
Investigate whether tab favicon principals are dead code
1985159 Disability Access APIs 3
severity 1
type 2
A11y tests use incorrect role="grouping" instead of role="group"
1985161 Layout 5
severity 2
type 2
see_also 1
[view-transitions-1] Have the `-image-pair`, `-old`, and `-new` pseudos inherit `animation-timing-function`
1985178 Graphics: WebRender 0
Add cargo feature and dependencies for WR remote debugger
1985180 Graphics: WebRender 0
Add basic remote debug infrastructure to WR
1985202 XPCOM 0
Modernize SFINAE usage in xpcom/threads/nsThreadUtils.h
1985203 JavaScript: GC 4
priority 1
severity 1
type 2
The comments for js::gc::GetGCHeapUsage incorrectly state that it doesn't include malloc memory usage
1985230 DOM: Core & HTML 4
severity 2
type 2
fix dom/html/test/test_bug1166138.html
1985233 Privacy: Site Reports 13
priority 3
severity 5
type 2
webcompat 3
wjactv.com - Website goes to a 500 error page when scroll down the page with ETP Standard in PBM
1985246 Tooling 1
see_also 1
Downgrade minSdkVersion to 21 for GeckoView example
1985265 General 0
[meta] Refactor StartupTypeTelemetryTest to avoid using MainCoroutineRule
1985291 Try 0
adjust android-geckoview preset to not run all tests on both android 7 and 14 emulators
1985317 General 0
Refactor BrowserToolbarIntegration to remove MainCoroutineRule from BrowserToolbarIntegrationTest
1985339 Password Manager 0
Disable CPM by default
1985412 Toolbar 0
Use Kotlin SharedPreferences extension function in ToggleRadioButtonPreference