Current Desktop beta cycle: 146

Uplifts by Product
137 uplifts

  1. OOM | small (13.75%) Known top crash
  2. shutdownhang | mozilla::SpinEventLoopUntil | nsThread::WaitForAllAsynchronousShutdowns | nsThreadManager::ShutdownNonMainThreads (6.25%) 1524247
  3. js::gc::ChunkMarkBitmap::markIfUnmarkedThreadSafe (3.75%) 1974595
  4. mozilla::net::LoadInfo::SetReservedClientInfo (3.75%) 1761208
  5. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (2.50%) 1877111
  6. AsyncShutdownTimeout | profile-before-change | AddonManager: shutting down. (2.50%)
  7. AsyncShutdownTimeout | quit-application | RemoteSettingsExperimentLoader: disabling (2.50%)
Uplifts and Backouts
Bug Component Summary
  1. OOM | small (15.28%) Known top crash
  2. ntdll.dll | inprocessclient64.dll | mozilla::interceptor::FuncHook<T>::operator() (6.25%)
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (4.86%) 1472062
  4. AsyncShutdownTimeout | AddonManager: Waiting to start provider shutdown. | AddonRepository Background Updater (4.17%) 1841444
  5. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (3.47%) 1877111
  6. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (3.47%) 1969401
  7. js::SinglyLinkedList<T>::popFront (2.78%)
Uplifts and Backouts
Bug Component Summary
1992989 Gecko Profiler Perma TEST-UNEXPECTED-FAIL | tools/profiler/tests/xpcshell/test_feature_stackwalking.js/test_merged_stacks.js | xpcshell return code: 0 - when Gecko 145 merges to beta on 2025-10-13
1994722 Toolbar [Trending Searches] Remove top sites suggestions
1997760 DOM: Core & HTML Perma [tier 2] /html/cross-origin-embedder-policy/cache-storage-reporting-dedicated-worker.https.html | expected FAIL when Gecko 146 merges to beta on 2025-11-10
1997774 DOM: Performance APIs Perma [tier 2] /largest-contentful-paint/web-font-styled-text-resize-swap-smaller.html | LCP should be not updated if the web font styled text resizes to be smaller during the swap period - expected TIMEOUT when Gecko 146 merges to beta on 2025-11-10
1999326 Layout: Text and Fonts Assertion failure: isOk(), at /builds/worker/workspace/obj-build/dist/include/mozilla/Result.h:610
1999358 General Perma beta Devedition Release Tasks opt ckbouncer OSError: Can't find r in ['.', '/builds/worker/checkouts/gecko/testing/mozharness/configs']!
  1. nsWrapperCache::ClearWrapper (17.28%) Top crash 1880768
  2. OOM | small (9.63%) Known top crash
  3. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (3.95%) 1877111
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (3.70%) 1472062
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (2.47%) 1969401
  6. mozilla::StyleGenericSize<T>::AsLengthPercentage (2.47%) 1990034
  7. mozilla::net::nsSocketTransportService::AttachSocket (2.22%) 1986095
Uplifts and Backouts
Bug Component Summary
1824143 DOM: UI Events & Focus Handling Crash in [@ RaiseFailFastException | FailFastWithHR] with mozilla::widget::TSFTextStore::RequestLock(unsigned long, HRESULT*) on the stack
1986060 Address Bar Autocomplete contents jiggle up-and-down when I type/delete space character (from recommended resource name disappearing/reappearing)
1991020 Netmonitor Frequent devtools/client/netmonitor/src/har/test/browser_net_har_copy_all_as_har.js | single tracking bug
1992288 DOM: Editor `TextEditor` becomes not available if reframing the text control in a `beforeinput`/`textInput` event listener
1994126 Design System and Theming [material 3] Some options are barely visible when entering Settings from private mode with Light theme
1995538 Address Bar Firefox Suggest results that have the "Feedback" button flicker while typing
1996107 Experimentation and Telemetry Enable adjust immediately for vivo-002 with COPPA setting enabled
1998628 Experimentation and Telemetry Release custom review prompt by default, keep the flag to control triggers/criteria
1998949 Widget: Gtk Bookmark folder popup flickers and disappears when large enough to reach the screen edges for unmaximized windows
1999123 Widget: Gtk Misplaced popups (Hamburger, Download, Tab Thumbnail) sometimes appear at top-left window corner
1999243 Other Follow-up #2 for Startup Crash with Avast (or other antivirus software) in [@ sandbox::InterceptionManager::PatchNtdll] with Firefox and Thunderbird
1999311 JavaScript Engine JIT test gc/bug-1997896.js sometimes fails locally
1999437 Address Bar Fix the browser-updateResults tests
1999551 JavaScript Engine LooselyEqual lacks the branch for BigInt vs Object
1999855 Interventions Use getBoolPrefSync for disabling pref to avoid round trip to parent.
1996555 Other …
1998050 Other …
  1. OOM | small (18.06%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (4.63%) 1472062
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (3.52%) 1969401
  4. mozilla::net::LoadInfo::SetReservedClientInfo (3.08%) 1761208
  5. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (2.42%) 1877111
  6. TppRaiseInvalidParameter | TppAllocAlpcCompletion (2.42%) 1943922
  7. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::Nursery::maybeMoveRawBufferOnPromotion (1.98%) 1472062
Uplifts and Backouts
Bug Component Summary
1992149 General [armeabi-v7a] startup Crash in [@ split_config.armeabi_v7a.apk] (JNA libjnidispatch.so)
1996553 Messaging System [Backup Onboarding] There are unnecessary scrollbars on certain screens of the spotlight
1997575 Search Perplexity toolbar hides behind the keyboard
1998775 Settings [app icon picker] Update the fun group naming from other to featured
1998838 DOM: Editor crash near null in [@ mozilla::HTMLEditUtils::IsBlockElement]
1999689 Crash Reporting Messages sent to the crash helper process might get mixed up
1999858 Address Bar isDismissedBySuggestion error when addon/AMO suggestions are triggered, preventing them from being individually dismissable
1979050 Other …
1852794 Other …
  1. OOM | small (13.09%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (6.94%) 1472062
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::Nursery::maybeMoveRawBufferOnPromotion (2.44%) 1472062
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (2.21%) 1969401
  5. js::gc::detail::ChunkPtrHasStoreBuffer (2.21%) 1980548
  6. js::gc::HeaderWord::get (2.13%) 1993404
  7. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (1.89%) 1877111
Uplifts and Backouts
Bug Component Summary
1958206 Layout: Grid Sticky positioned element inside subgrid is contained to top level grid, not to subgrid box.
1990034 Layout Crash in [@ mozilla::StyleGenericSize<T>::AsLengthPercentage]
1992446 Security: PSM Upgrade Firefox 146 to NSS 3.118
1997069 Messaging System [Backup Onboarding] The user can complete the Onboarding process even though there is no folder selected in the backup path field
1997245 Widget: Cocoa Dark Firefox Icon Does Not Match Apple's Guidelines on macOS Tahoe
1997535 Address Bar Saved bookmarks sometimes display a broken meatball menu in the Firefox Suggest section
1997894 JavaScript: GC Intermittent Assertion failure: cellsToAssertNotGray.ref().empty(), at /builds/worker/checkouts/gecko/js/src/gc/Sweeping.cpp:X
1998100 Toolbar Empty strip remains and stories section cut when scrolling on homescreen with the toolbar set to top with composable toolbar disabled
1998360 Sidebar "Remove from sidebar" context menu item appears when right-clicking empty areas of sidebar
1998740 Homepage Pin stories to bottom of homepage when the simplified homescreen is active
1998742 Homepage Update text scaling threshold for showing all of homepage stories card titles from 1 to 1.2
1998748 Top Sites Add link as a shortcut for Japan
1998755 Homepage Reduce padding above shortcuts
1998886 Settings UI Backup option appear under about:preferences#experimental page.
1999324 DOM: Notifications web notifications stopped working on OpenBSD in 144
1999361 JavaScript: GC Intermittent Assertion failure: !tc->isMarkedGray(), at /builds/worker/checkouts/gecko/js/src/gc/GC.cpp:X
1999497 Messaging System The AI Chat onboarding panel spills over the Continue button
1999501 JavaScript: GC UnmarkGrayTracer::onChild incorrectly asserts that only symbol atoms may be gray
1999681 Graphics: WebRender Crash in [@ libc.so | libGLES_mali.so] in glShaderSource on Mali-G57
2000099 Graphics: WebGPU Performance regression in bind group processing
2000411 Installer Opening Firefox from the desktop shortcut no longer works
2000479 DOM: UI Events & Focus Handling `ContentCacheInParent::HandleQueryContentEvent` should not return error when there is a selection and queried with relative offset from current selection
2000590 Address Bar Tweak Unified Search Button arrow animation based on UX feedback
2000690 UI Tests Temporarily disable API 26/28 on legacy-arm
  1. OOM | small (15.01%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (5.45%) 1472062
  3. js::gc::HeaderWord::get (2.90%) 1993404
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (2.40%) 1969401
  5. nsWrapperCache::ClearWrapper (2.40%) 1880768
  6. mozilla::SharedSubResourceCache<T>::LoadCompleted (1.83%) 1777931
  7. js::gc::detail::ChunkPtrHasStoreBuffer (1.68%) 1980548
Uplifts and Backouts
Bug Component Summary
1950282 Site Reports f1tv.formula1.com - Firefox is not a supported browser
1989368 Layout Assertion failure: IsLengthPercentage(), at /builds/worker/workspace/obj-build/dist/include/mozilla/ServoStyleConsts.h:13997
1992149 General [armeabi-v7a] startup Crash in [@ split_config.armeabi_v7a.apk] (JNA libjnidispatch.so)
1992809 Profile Backup Add telemetry to be sent when restoring a backed up Firefox Profile
1993227 Memory Allocator 8.72% cpstartup content-process-startup (Windows) regression on Tue September 30 2025
1996201 Widget: Gtk Reference DBus connection to make it live
1997067 Profile Backup The “(recommended)” text is displayed inside the backup path instead of the “No folder selected” placeholder text if there is no detection of the OneDrive or Documents folder
1997287 IP Protection Firefox VPN “Upgrade” button redirects to production while in stage
1997404 IP Protection Split panel status card into its own lit component
1997406 IP Protection Implement new status card designs
1997411 IP Protection Add a new site settings button in status card
1997477 Widget: Win32 Perma [tier 2] linting opt /builds/worker/checkouts/gecko/widget/windows/tests/unit/test_windowsTestDebug.js:28:5 | Use of unknown interface Ci.nsIWindowsTestDebug (mozilla/valid-ci-uses)
1998358 Tabbed Browser Tab group hover preview is too wide for long page titles, extending to screen edges and covering most of desktop
1998446 UI Widgets Styling changes for scrollable moz-box-group introduced visual regressions in about:preferences
1998500 IP Protection Add metric for error message views
1999092 DOM: Navigation Perma docshell/test/navigation/test_bug1706090.html | Shouldn't have persisted same origin load. - got true, expected false when Gecko 146 merges to beta on 2025-11-10
1999107 General Uplift fix for PR_ParseTimeStringToExplodedTime to m-c (bug 1999105) (NSPR 4.38.2 or NSPR 4.36.2)
1999385 Profile Backup Changing the backup password doesn't automatically create a new backup
1999461 Profile Backup Password tooltip is completely misplaced on RLT builds
1999547 Homepage The wordmark text, logo, and private browsing button do not respect wallpaper colors
1999580 Graphics: Canvas2D Crash in [@ mozilla::gfx::DrawTarget::GetFormat]
1999679 Settings UI "Addresses and more" title has become too close to payments section in settings
1999786 Profile Backup The user’s choice to save the backup file in a custom location is not honored as the file is saved either in OneDrive or Documents depending on which one is detected
1999836 Messaging System Unencrypted backup is enabled for users after the "Select folder" screen during encrypted onboarding experience
1999839 Graphics: WebRender Jank with border-radius and radial-gradient background combined
1999848 IP Protection Intermittent TV browser/components/ipprotection/tests/browser/browser_ipprotection_status_card.js | Test timed out -
2000263 Reader Mode User-customized font weight in Reader View isn't working anymore
2000619 Enterprise Policies Error on console with Backup policy
2000708 Installer Desktop launcher tries to download the stub installer from an incorrect URL
2000832 Address Bar The "Thanks" message displayed after clinking the "Don't show sports suggestions" is blank
2000890 Messaging System Add termsofuse.acceptedDate and termsofuse.firstAcceptedDate to allowedSetOnImpressionPrefs list
1979576 Other …
1992760 Other …
  1. OOM | small (16.57%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (7.87%) 1472062
  3. js::gc::detail::ChunkPtrHasStoreBuffer (2.66%) 1980548
  4. EnterJit (2.31%) 1848584
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (2.25%) 1969401
  6. shutdownhang | mozilla::SpinEventLoopUntil | nsThreadPool::ShutdownWithTimeout (1.89%) 1895110
  7. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (1.72%) 1877111
Uplifts and Backouts
Bug Component Summary
1917726 Browser Engine Page unexpectedly shifts when trying to scroll subframe (with toolbar-on-top)
1989365 Layout Resolve 'stretch' and '-webkit-fill-available' against the viewport height in quirks mode (as we do with percentages)
1997657 Profile Backup Enable backup prefs by default
1999829 Netmonitor Memory leak in devtools network tab, MacOS
2000059 IP Protection Update IPP autostart to use feature prefs
2000298 IP Protection Clicking update duplicates the IPP panel
2000728 IP Protection Update IPP site exceptions to use feature prefs
2000929 Enterprise Policies Setting just ImportEnterpriseRoots via the registry shows as enterprise in telemetry
2001486 Address Bar Use short month names for flight status suggestions
2001661 UI Tests Don't send command to enable the network connection in the test setup
1840666 Other …
1996473 Other …
  1. OOM | small (14.16%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (6.23%) 1472062
  3. AsyncShutdownTimeout | Places Clients shutdown | sanitize.js: Sanitize on shutdown (2.73%) 1578273
  4. js::gc::HeaderWord::get (2.60%) 1993404
  5. EnterJit (2.47%) 1848584
  6. js::gc::detail::ChunkPtrHasStoreBuffer (2.47%) 1980548
  7. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::Nursery::maybeMoveRawBufferOnPromotion (2.08%) 1472062
Uplifts and Backouts
Bug Component Summary
1980302 Networking: HTTP Firefox shows the wrong prompt when redirecting to local IP address captive-portal page, when connecting to library open-wifi hotspot with 198.18..* ip-address scheme (redirect blocked with `NS_ERROR_LOCAL_NETWORK_ACCESS_DENIED`)
1993191 IP Protection Firefox VPN cannot be turned ON
1996823 Site Reports View bill on rogers.com and fido.ca give "Firefox Can’t Open This Page"
1997231 IP Protection Update IP protection panel headers
1997657 Profile Backup Enable backup prefs by default
1998596 Toolbars and Customization New-tab container selection menu incorrectly positioned when dragged down
1999634 Toolbar Very often, when I type something to search, a wrong page to the latest autocompleted website from my history opens instead
1999994 Audio/Video: Playback Crash in [@ java.lang.NullPointerException: at android.os.Parcel.createExceptionOrNull(Parcel.java)]
2000531 Site Reports storage.googleapis.com - Incorrect movement triggered when tapping/clicking on maze
2000709 Experimentation and Telemetry Add Nimbus flag to control turning on or off the ToU bottom sheet's drag to dismiss gesture and handle
2001191 Enterprise Policies Private Window options still available when private browsing is disabled
2001487 Onboarding Swap order the ToU bottom sheet's Accept and Remind Me Later buttons
2001533 General Startup Crash in [@ mozilla::ViaductRequest::LaunchRequest]
2001767 Address Bar Switch-to-tab rows have a big empty space on action override
2001941 Homepage Firefox logo is displayed in black or white on Homepage when a wallpaper is selected
2001943 Profile Backup Private window is restored if backup was performed encrypted/non-encrypted.
2002141 Address Bar Remove support for unmanaged Merino suggestions
1979576 Other …
2000218 Other …
1999464 Other …
2000469 Other …
1997018 Other …
Uplifts and Backouts
Bug Component Summary
1962139 Audio/Video: Playback Support FFmpeg 8.0 (libavcodec 62) on Unix
1978773 Graphics: WebRender Render gradients from gradient stops directly
1993474 Widget: Win32 On an external monitor in a maximized Firefox window, can't select a tab with the cursor at the top of the screen
1996894 Messaging System [Backup Onboarding] Clicking the Settings link from the Confirmation screen doesn’t close the spotlight
1998890 Startup and Profile System Copying a profile fails to transfer passwords, payments, and address data
1999791 General schema error in `org_mozilla_fenix.health_v1` for #/metrics/schema: counter
2001395 Profile Backup Enable fxbackup for windows user's by default
2001459 Password Manager DisablePasswordReveal enterprise policy no longer hides the show password button
2001465 Tabs Update the bottom app bar to be Material 3 Expressive Floating toolbar
2002038 Tabs Update the padding on the New Tab button
1966501 Other …
1997822 Other …
1996761 Other …
1996840 Other …