Current Desktop beta cycle: 148

Uplifts by Product
109 uplifts

  1. OOM | small (12.15%) Known top crash
  2. VerifyCientPrincipalInfosMatch (8.41%) 2006265
  3. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (3.74%) 1877111
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (3.74%) 1472062
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (3.74%) 1969401
  6. nsWindowWatcher::OpenWindowInternal (3.74%)
  7. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | v8::internal::Zone::New (2.80%)
Uplifts and Backouts
Bug Component Summary
1967968 General Minify the pdf.js code in order to improve the loading performance
2008041 XUL Make XUL disabled / checked attributes html-style boolean attributes.
2008883 XUL Check state menuitem type `checkbox` and `radio` are not shown
2009098 XUL The ‘Open link’ button in the Application chooser dialog is disabled
2009101 Settings UI The state of the certain radio buttonis not shown correctly in about:preferences
2009750 Release Automation Perma flatpak-repackage `TypeError: subprocess.run() got multiple values for keyword argument 'check'`
  1. OOM | small (13.86%) Known top crash
  2. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (3.47%) 1877111
  3. VerifyCientPrincipalInfosMatch (3.47%) 2006265
  4. AsyncShutdownTimeout | Places Clients shutdown | sanitize.js: Sanitize on shutdown (2.97%) 1578273
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::Nursery::maybeMoveRawBufferOnPromotion (2.48%) 1472062
  6. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (2.48%) 1472062
  7. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (2.48%) 1969401
Uplifts and Backouts
Bug Component Summary
2003349 Nimbus Desktop Client Hide rollouts from about:studies
2003350 Nimbus Desktop Client Use a separate opt-out pref for rollouts
2008751 web-platform-tests Perma wpt-unittest [taskcluster:error] exit status 1
2008777 Widget: Gtk [Wayland] firefox should not bind server version of globals
  1. OOM | small (11.79%) Known top crash
  2. google::protobuf::EncodedDescriptorDatabase::Add (4.07%) 1991378
  3. js::gc::HeaderWord::get (3.46%) 1993404
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (3.25%) 1969401
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::GetGCKindSlots (3.05%) 1472062
  6. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (2.64%) 1472062
  7. VerifyCientPrincipalInfosMatch (2.64%) 2006265
Uplifts and Backouts
Bug Component Summary
1988163 General Use latest Nimbus SDK rolloutParticiaption and experimentParticipation
2002511 Keyboard Navigation The Backspace key is treated as a custom shortcut instead of deleting custom key prefixes on the about:keyboard page
2007754 Graphics: WebGPU Crash in [@ wgpu_hal::dx12::Adapter::expose]
2007838 Widget: Gtk Crash in [@ mozilla::widget::WlLogHandler_MarshallingError]
2008739 Other startup crash in content processes with Trellix
2008998 Sidebar The sidebar defaultLauncherVisible marionette test fails when sidebar.revamp defaults to true
2009849 Site Reports Sports Illustrated article reloads itself over and over in Firefox
2010028 DOM: Navigation Assert mInitializableFrameLoaders doesn't contain null
2010234 Translations Disable `Always offer to translate` then enable it, the check mark does not appear even though it is enabled
2010411 Internationalization CLDR 48 'h' hour format is possibly web incompatible
2010739 Networking: Cache Disable Compression Dictionaries in 147+
2009439 Other …
2007829 Other …
  1. OOM | small (12.53%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (3.87%) 1969401
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (3.59%) 1472062
  4. js::gc::detail::ChunkPtrHasStoreBuffer (3.23%) 1980548
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::GetGCKindSlots (2.58%) 1472062
  6. XREMain::XRE_main (2.58%) 1928888
  7. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (2.40%) 1877111
Uplifts and Backouts
Bug Component Summary
2002962 Settings UI The credit cards remove and edit buttons under Manage payment methods subpage are not correctly read by the screen reader
2006820 Widget: Gtk Nested bookmarks menus sometimes appeared to the left of their normal positions
2009627 PDF Viewer Math characters being read twice from pdf.js accessibility screen readings
2009729 Layout: Positioned Assertion failure: aKidFrame->HasAnchorPosReference(), at /layout/generic/AbsoluteContainingBlock.cpp:256
2010056 Printing Printing a parent process page (like about:config) with print.always_print_silent = true crashes the browser [@ mozilla::PresShell::GetRootFrame ]
2010484 Layout: Form Controls Option elements' text may be difficult to read when the select element's background is set to a background-image with transparent background-color
2010535 Startup and Profile System Links from external apps don't load, clicking a link brings Firefox to the foreground but the URL doesn't open
2010601 Layout Crash in [@ stackoverflow | nsIFrame::GetOffsetToCrossDoc]
2010608 CSS Parsing and Computation Crash in [@ mozilla::dom::ViewTransition::MatchClassList]
2010762 Networking: Cache Annotate WPT decoded-body-size-compressed.https.html as needing the compression dictionaries pref to be enabled
2010764 Design System and Theming Fenix 147.0 [@ java.lang.IllegalStateException: at androidx.fragment.app.Fragment.getParentFragmentManager(Fragment.java) ]
2010926 UI Tests Intermittent org.mozilla.fenix.ui.PocketTest#openPocketStoryItemTest | java.lang.AssertionError: UiSelector[CONTAINS_TEXT=Stories] does not exist
2008912 Other …
  1. OOM | small (12.09%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (3.25%) 1472062
  3. VerifyCientPrincipalInfosMatch (2.39%) 2006265
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (2.28%) 1969401
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::GetGCKindSlots (2.01%) 1472062
  6. mozilla::SharedSubResourceCache<T>::LoadCompleted (1.95%) 1777931
  7. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (1.84%) 1877111
Uplifts and Backouts
Bug Component Summary
1868289 UI Tests Intermittent UI test failure - < ComposeSettingsDeleteBrowsingDataOnQuitTest.deleteDownloadsOnQuitTest >
1959008 Address Bar Frequent browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_selected_result.js | single tracking bug
1993576 Security: PSM Sending messages with an O365 account is unworkably slow and times out "The message could not be sent because the connection to (SMTP) server smtp.office365.com timed out"
2000967 IP Protection Firefox VPN widget icon is not aligned in Customize menu
2003449 DOM: Navigation Crash in [@ mozilla::dom::VerifyStoragePrincipalMatchesDocumentPrincipal ]
2009862 IP Protection Remove VPNAddonHelper and tests
2010002 Toolbar Toolbar divider has padding
2010003 Address Bar Perma browser/extensions/webcompat/tests/browser/browser_smartblockembeds.js | browser/extensions/webcompat/tests/browser/browser_smartblockembeds.js | test_smartblock_embed_replaced - A promise chain failed when Gecko 148 merges to beta on 2026-02-23
2010042 Other Don't hook BR instructions on ARM64 and unblock inprocessclient64.dll
2010108 Machine Learning: On Device Add AIFeature base class for GenAI components
2010284 Settings UI Add AI Controls strings for localization
2010288 XML Update error_verifier for new values of XML_Error to fix XML DoS crashes
2010327 Toolchains subprocess.CalledProcessError: Command '['msiexec', '/a', ... ] returned non-zero exit status 1603.
2010919 DOM: Web Authentication WebAuthn calls with unsupported mediation requirements should be rejected
2010956 Safe Browsing The SafeBrowsing V5 hash completion doesn't filter out mismatched threat type.
2011102 DOM: Editor No caret in textarea when focused via Tab key
2010275 Other …
2009608 Other …
  1. OOM | small (12.69%) Known top crash
  2. EnterJit (3.22%) 1848584
  3. VerifyCientPrincipalInfosMatch (3.13%) 2006265
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (2.94%) 1472062
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::GetGCKindSlots (2.29%) 1472062
  6. js::gc::detail::ChunkPtrHasStoreBuffer (2.15%) 1980548
  7. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (2.10%) 1969401
Uplifts and Backouts
Bug Component Summary
1866930 Layout: Grid Firefox fails WPT css/css-grid/subgrid/orthogonal-writing-mode-005.html
1951791 Layout: Flexbox Flex container gets the wrong exported baseline from orthogonal-writing-mode flex item
1981883 Networking: HTTP Crash in [@ mozilla::net::HttpBackgroundChannelParent::OnSetClassifierMatchedTrackingInfo]
1997776 Share `146.0a1` crashes with an `IllegalStateException` because “Only owner is able to interact with pending/trashed item”.
1998228 Machine Learning: On Device Add a tsconfig.json to toolkit/components/ml and begin some type checking
2002458 Widget: Win32 Firefox reliably crashes on our web application (gdi font, win32k lockdown)
2003109 Layout: Form Controls Textarea wrap=hard: The behavior differs from Chrome. Unintended line breaks are inserted.
2009144 DOM: Navigation "allow-same-origin" attribute on iframe should allow for Navigation API navigations on sandboxed iframes
2009225 Layout: Positioned Scroll-compensated positioned elements should not contribute to scrollable overflow of its initial scroller position
2009271 Settings UI Implement link preview Key Points model management in Settings
2009272 Settings UI Implement PDF alt text model management in Settings
2009424 Layout: Positioned Make viewport containing block adjustment work for default-anchored frames.
2010081 Machine Learning: On Device Support Complete ML Engine and Feature Removal
2010145 Security: PSM regenerate test certificates for 2026
2010313 Tabbed Browser: Tab Groups Add Smart Tab Grouping API for Settings
2010412 Machine Learning: On Device Support LinkPreview model removal
2010601 Layout Crash in [@ stackoverflow | nsIFrame::GetOffsetToCrossDoc]
2010648 Security: PSM disable QWACs for now
2010986 Find Backend Assertion failure: cmp (Start and end points in different trees?), at /builds/worker/checkouts/gecko/toolkit/components/find/nsFind.cpp:636
2011114 DOM: Editor Make `input` event dispatching around `compositionend` selectable per domain
2011219 Theme browser content transparency is broken since bug 2004464
2011247 New Tab Page The dismiss option for sponsored shortcuts does not work as expected when attempting to dismiss the first shortcut after the New Tab add-on is installed
2011300 Security: Process Sandboxing Sandbox denies access to $ProfD/chrome and $ProfD/extensions when profile is under new XDG basedir (was: Some translations are missing when profile is under new XDG basedir)
2008426 Other …
2010933 Other …
2010943 Other …
2010050 Other …
  1. OOM | small (12.98%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (2.45%) 1472062
  3. shutdownhang | mozilla::SpinEventLoopUntil | nsThreadPool::ShutdownWithTimeout (2.45%) 1895110
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::TraceEdgeInternal (2.37%) 1472062
  5. VerifyCientPrincipalInfosMatch (2.37%) 2006265
  6. js::gc::detail::ChunkPtrHasStoreBuffer (2.29%) 1980548
  7. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (1.96%) 1969401
Uplifts and Backouts
Bug Component Summary
2001801 Onboarding Custom review prompt being displayed repeatedly in 145.0.1
2003810 Inspector Unable to re-open devtools: Permission denied to access property "isChromeWindow" on cross-origin object
2007539 General DevTools tests aren't reloading the test pages like Firefox does
2007637 Site Reports heinnie.com - Products do not load on the page intermittently
2008581 Machine Learning: On Device PlacesSemanticHistoryManager should log errors directly instead of inlining as strings into the error message, so that we get stacks
2010526 CSS Parsing and Computation www.emag.ro - The product image cannot be zoomed or dragged after zooming once
2010551 Experimentation and Telemetry Re-enable custom review prompt
2010922 Translations Make TranslationsParent Conform to AIFeature
2011043 Security Enable felt privacy error pages for Nightly only
2011163 Address Bar TypeScript error MLSuggest.sys.mjs Argument of type '{ args: string[]; options: {}; }' is not assignable to parameter of type '{ args: string[]; options: {}; streamerOptions: {}; telemetryOptions: {}; }'
2011628 Networking Sniff <!-- as HTML to match Chrome
2011886 General Switch off isolated processes by default
2011960 DOM: Geolocation Include the OS in the GLS query string so we can attribute server side API usage.
1988145 Other …
Uplifts and Backouts
Bug Component Summary
1999985 Tabs Crash in [@ java.lang.IllegalStateException: at android.os.Parcel.createExceptionOrNull(Parcel.java)]
2003045 Widget: Gtk [Ubuntu 24.04LTS GNOME 46] Misplaced popups (Dev Tools Console Settings, context-menu) sometimes appear at top-left window corner
2004898 Web Painting Sticky header no longer renders solid without flashing when rapidly scrolling to the top of page
2006265 DOM: Service Workers Crash in [@ VerifyCientPrincipalInfosMatch ] - Inherit controller for top level initial about:blank
2007774 DOM: Core & HTML Crash in [@ nsFrameLoader::CheckURILoad]
2010481 Web Painting ":hover" interrupts "position:sticky" when scrolling with the mousewheel
2010501 Settings UI DNS drop down under privacy and security is broken after 147
2010994 Address Bar Search suggestion highlighting is broken
2011511 WebRTC: Audio/Video Intermittent Mozilla crash reason: [Parent X, Y Thread] ###!!! ABORT: file /builds/worker/checkouts/gecko/dom/media/systemservices/CamerasParent.cpp:X
2012108 Audio/Video: Playback bringatrailer.com - Video appears frozen and changes the frame every 5 seconds
2012134 General Entering and exiting Settings, doesn't display the opened tabs when returning to homescreen
2012305 XUL Popups no longer update position
2012012 Other …
2011649 Other …
Uplifts and Backouts
Bug Component Summary