Current Desktop beta cycle: 149

Uplifts by Product
272 uplifts

  1. OOM | small (15.25%) Known top crash
  2. mozilla::layers::NativeLayerMacSurfaceHandler::HandlePartialUpdate<T> (11.86%) Top crash 2018247
  3. IPCError-content | RecvConstructBrowser BrowserChild::Init failed (rv=NS_ERROR_FAILURE) (5.08%) 2014692
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (3.39%) 1472062
  5. XREMain::XRE_main (3.39%) 1928888
  6. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (2.54%) 1877111
  7. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::AllocateTenuredCellInGC (2.54%) 1921815
Uplifts and Backouts
Bug Component Summary
2005854 Theme Paint the toolbox background-color to the body element.
2016280 DOM: Core & HTML Consider implementing text controls with Shadow DOM rather than NAC.
2018056 Alerts Service Clicking toast notifications brings up default window if alerts.useSystemBackend.windows.notificationserver.enabled = false
2018235 Marionette Perma wd TEST-UNEXPECTED-PASS | /webdriver/tests/classic/perform_actions/pointer_mouse.py | test_down_closes_browsing_context[with up] - expected FAIL | single tracking bug
2018248 Tabbed Browser Land Fluent ID strings for the title and description of the Tab Notes in features.ftl - mozsearch
2018740 Task Configuration Ensure `update-test` tasks don't use internal pypi
  1. OOM | small (12.37%) Known top crash
  2. IPCError-content | RecvConstructBrowser BrowserChild::Init failed (rv=NS_ERROR_FAILURE) (8.25%) 2014692
  3. js::frontend::ScriptStencil::gcthings (7.22%)
  4. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (5.15%) 1877111
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (4.12%) 1472062
  6. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (4.12%) 1969401
  7. shutdownhang | mozilla::SpinEventLoopUntil | nsThread::WaitForAllAsynchronousShutdowns | nsThreadManager::ShutdownNonMainThreads (4.12%) 1524247
Uplifts and Backouts
Bug Component Summary
1992744 Tabbed Browser: Split View Add telemetry for split view
1996471 Tabbed Browser: Split View Frequent browser/components/tabbrowser/test/browser/tabs/browser_tab_splitview_contextmenu.js | single tracking bug
2010728 Menus "New AI Window" and "New Classic Window" items shown in macOS File menu when no Firefox windows are open
2014272 Messaging System [AIWindow] Add pref flip to show AI switcher icon on about:welcome AI Window screen
2015790 Privacy The "Unlock your device" prompt cannot be dismissed when using PIN as the only Unlock method
2015874 Tabbed Browser Nimbus targeting attribute for number of tab notes
2016943 Raptor Perma Btime connect Exception: Couldn't execute privileged script named CUSTOM PRIVILEGED error:JavascriptError: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsISpeculativeConnect.speculativeConnect]" nsresult
2017049 Search Newtab search handoff can't be disabled anymore
2017482 DOM: Editor crash near null [@ nsINode::GetShadowRootForSelection]
2017500 DOM: Core & HTML crash near null [@ mozilla::ContainedTextAutoDirectionality]
2017735 Search Impression attributes should check element visibility before reporting as true
2017742 IP Protection Remove IPP usage metrics
2017901 Graphics Crash in [@ libc.so | mozilla::widget::LayerViewSupport::DoRequestScreenPixels::{lambda#1}::operator()]
2018257 Search Temporarily revert changes which cleaned up messages in the ContentSearchParent
2018644 New Tab Page MREC visual bug
2019138 Messaging System Use onboarding refresh strings
2019680 Tabbed Browser: Split View Update tabSwitch messaging to only fire after every 3 tab switches between the same two tabs
2019794 Experimentation and Telemetry Update Adjust post install event tokens
  1. OOM | small (15.94%) Known top crash
  2. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (5.80%) 1877111
  3. js::gc::detail::ChunkPtrHasStoreBuffer (5.80%) 1980548
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (5.07%) 1969401
  5. OOM | unknown | NS_ABORT_OOM | mozilla::dom::Promise::CreateInfallible | mozilla::dom::ReadableStreamDefaultReader::Read (3.62%) 2015430
  6. js::gc::HeaderWord::get (3.62%) 1993404
  7. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (2.90%) 1472062
Uplifts and Backouts
Bug Component Summary
1963712 Alerts Service Allow GIF images in Windows Toast Notifications
2002991 Release Automation Enable RPM shipping for firefox beta
2009468 Session Restore Add canonical URL to tab state for use by tab notes
2009927 Release Automation rpm: Sign in-tree firefox RPM packages
2012254 Tabs Custom Tabs' 3-dot-menu is purple (private-browsing-themed), if Firefox Nightly has a private tab in the foreground
2013426 Messaging System Allow Messaging System to show animated gifs in Windows notifications
2016506 Layout Assertion failure: mFrames.IsEmpty() (unexpected second call to SetInitialChildList), at /builds/worker/checkouts/gecko/layout/generic/nsContainerFrame.cpp:75
2016617 Web Apps Intermittent TV browser/components/taskbartabs/test/browser/browser_taskbarTabs_icons.js | single tracking bug
2017744 IP Protection Add IPP bandwidth used metric
2018202 IP Protection [Linux] “Use VPN for this site” label wraps to 2nd line and overlaps the divider
2019136 Messaging System Add onboarding brand refresh images
2019177 Tabs Custom Tabs' system tray & navbar are purple (private-browsing themed), if Firefox Nightly has a private tab in the foreground
2019360 Cycle Collector Crash in [@ CCGraph::Init] with "OOM"
2019532 Graphics Crash in [@ @0x0 | mozilla::gl::GLContext::fBlitFramebuffer | RenderCompositorOGLSWGL::MaybeCaptureScreenPixels] on Mali-400
2019602 Tabbed Browser: Split View Footer telemetry trigger events are sent as icon telemetry events
2019776 Messaging System Remove OS restrictions for Smart Window ToU modal for existing users
2018090 Other
2015291 Other
2016375 Other
2016511 Other
2019517 Other
2011412 Other
2017512 Other
2018400 Other
2017303 Other
2017942 Other
2018405 Other
  1. OOM | small (22.41%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (4.60%) 1472062
  3. (anonymous namespace)::wasapi_register_device_collection_changed (4.02%)
  4. webrender::render_task::RenderTask::new_dynamic (4.02%)
  5. mozilla::net::LoadInfo::SetReservedClientInfo (3.45%)
  6. OOM | unknown | NS_ABORT_OOM | mozilla::dom::ContentChild::RecvConstructBrowser (2.87%) 2022780
  7. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (2.87%) 1969401
Uplifts and Backouts
Bug Component Summary
1985031 Experimentation and Telemetry [Experiment] The Setup Checklist cannot be completed/dismissed if the user checks the “Don’t ask again” checkbox on the “Set as default" prompt and another browser is set as default
2001938 DOM: Core & HTML docs.google.com - Ctrl+F5 in Google Slides to present in full screen is blocked
2014295 Tabbed Browser Move Tab Note section in Tab Preview to new panel
2014299 Tabbed Browser Improve persistence handling in Tab Preview
2014358 Tabbed Browser: Split View Pinning a split view is allowed when part of a multiselection
2014692 DOM: Navigation Crash in [@ IPCError-content | RecvConstructBrowser BrowserChild::Init failed (rv=NS_ERROR_FAILURE)]
2014810 IP Protection Confirm correct decimal format for data left for VPN
2014925 Graphics Crash in [@ <gleam::gl::GlesFns as gleam::gl::Gl>::get_shader_info_log]
2014963 Tabbed Browser: Split View Dragging a Split View and a normal tab to an existing window will multiselect all the tabs on the left
2015915 IP Protection Add timeouts to requests in GuardianClient
2017378 Security Enable felt privacy error pages by default for Beta and Release 149
2017547 Site Reports www.hyattinclusivecollection.com - The page continuously reloads itself
2017603 IP Protection GuardianClient survives uninit()
2017756 IP Protection Show error icon for network errors only after a VPN attempt
2017785 Storage: IndexedDB Assertion failure: aNewLength <= base_string_type::mLength (Truncate cannot make string longer), at /builds/worker/workspace/obj-build/dist/include/nsTSubstring.h:1026
2017797 General Clipboard2File stopped working in Firefox Nightly
2017903 DOM: Core & HTML Crash in [@ mozilla::dom::WindowGlobalChild::RecvProcessCloseRequest]
2017949 Widget: Gtk Toggling checkbox of titlebar in Customize Toolbar causes the entire browser window becomes transparent.
2018004 Networking: Cookies Assertion failure: !partitionedPrincipalOriginAttributes.mPartitionKey.IsEmpty(), at /builds/worker/checkouts/gecko/netwerk/cookie/CookieService.cpp:621
2018009 IP Protection Update IPP uses of BANDWIDTH.MAX_IN_GB to be based on usageInfo
2018852 IP Protection The usage warning is still displayed after signed out
2019296 Settings UI Default font option disappears from Fonts dropdown after reverting selection
2019414 Messaging System Add a Nimbus variable for privacy milestones
2019453 mozperftest Perma [tier 2] homeview Exception: Difference in Images is too high, suspected faulty run
2019555 Address Bar Width of new searchbar is not remembered
2019713 IP Protection Clear bandwidth warning infobar on sign out
2019715 IP Protection Clear all bandwidth warnings when the user hits bandwidth limit
2019799 New Tab Page Add ability to turn off ScriptLoader in AboutNewTabChild
2019813 Other
2018592 Other
2013762 Other
  1. OOM | small (11.15%) Known top crash
  2. AsyncShutdownTimeout | profile-before-change-telemetry | CrashManager: submitting Glean crash ping(s) (4.83%) 2017910
  3. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (4.46%) 1877111
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (3.72%) 1472062
  5. mozilla::ErrorLoadingSheet (3.72%)
  6. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (3.35%) 1969401
  7. js::gc::detail::ChunkPtrHasStoreBuffer (2.97%) 1980548
Uplifts and Backouts
Bug Component Summary
1853873 Settings UI Intermittent browser/components/preferences/tests/browser_application_xml_handle_internally.js | applicationXmlHandleInternally - application/xml is present in handlersView - null == true | single tracking bug
1930026 Settings UI Frequent browser/components/preferences/tests/browser_change_app_handler.js | at least one item is present | single tracking bug
1972076 Settings UI Convert Applications to config-based prefs
2008317 Address Bar [unified trust panel] http-only "Not Secure" shield loses its red slash (making it look more-trustworthy) when you turn off tracking protection
2009191 General Crash in [@ java.lang.IllegalArgumentException: at androidx.compose.ui.text.internal.InlineClassHelperKt.throwIllegalArgumentException(InlineClassHelper.kt:3)]
2010864 Settings UI Applications action menu dropdown option overflows and causes scroll
2011220 Search Middle clicking alternate engines should perform a search on the current search bar text in a new tab
2013818 Tabbed Browser: Split View Cannot restore a tab group when it contains a split view with an `about:newtab`
2014304 Audio/Video tab preview for netflix oddly corrupted
2015252 Tabbed Browser: Split View Add 'reverse tabs' menu option to the tab context menu for tabs in a Splitview
2016048 Performance Make Windows hardware pools use `hideCmdWindow`
2016638 Settings UI Frequent browser/components/preferences/tests/browser_applications_selection.js | checkDropdownBehavior - mailItem is present in handlersView. - null == true | single tracking bug
2016648 Settings UI High frequency browser/components/preferences/tests/browser_bug410900.js | single tracking bug
2016733 Settings UI Frequent browser/components/preferences/tests/browser_filetype_dialog.js | dialogShowsCorrectContent - pdfItem is present in handlersView. - null == true | single tracking bug
2016820 Settings UI rows without possible action in new application settings design
2017031 Graphics: WebRender Hit MOZ_CRASH(Bad Prim render task size: 0x0) at gfx/wr/webrender/src/render_task.rs:992
2017369 Address Bar Unified Trust Panel has various contradictory and confusing bits of UI, on "Server Not Found" error-page
2017486 IP Protection Split up ipprotection.toggled metric
2017487 IP Protection Add metrics for IPP exclusions
2017741 IP Protection Add metrics for when IPP proxy is paused
2017868 DOM: Navigation Set sameDocumentNavigationOverridesLoadType pref to false by default on all channels (Android)
2018133 Profile Backup Perma browser/components/backup/tests/xpcshell/test_BackupService_crossProfileTypeRecovery.js | test_legacy_backup_into_legacy_profile - [test_legacy_backup_into_legacy_profile : 247] maybeSetupDataStore - when Gecko 149 merges to beta on 2026-02-23
2018651 IP Protection [Linux] The “VPN is off for this site” confirmation hint is displayed when “Use VPN for this site” toggle is switched off
2018942 DOM: UI Events & Focus Handling Disable APZ touch slop when running test_coalesce_touchmove.html test
2019011 Tabbed Browser: Split View Update "Open Link in Split View" context menu option to open a split view with a tab for the link and a tab for the existing page you were on when opening the link
2019245 Privacy: Anti-Tracking Collect availTop/left
2019298 Other Crash in [@ stackoverflow | dynamicdll64.dll | <unknown in ntdll.pdb>]
2019311 Machine Learning: Frontend The Smart Window Welcome Screen is displayed at startup on Ubuntu
2019386 IP Protection Remove unused ipprotection.enabled metric
2019574 Address Bar browser.search.widget.lastUsed is never updated in new searchbar
2019900 Session Restore The tabs added to a closed group are all blank when the group is restored if the Add Split View to group option was used on that closed group
2019924 Address Bar [macOS] Missing ‘Add’ badge for open search engines in the Unified Search Button
2020341 Address Bar "Switch to Tab" suggestion is empty
2020354 Settings UI Two links to redesigned privacy & security settings are partially broken
2020423 Homepage Edge to edge issue in 148 on homepage after going through new onboarding
2020766 Toolbar Disable open in app (firefox) option in menu when we have sandbox custom tab
2020847 Settings [Settings Search] Enable settings search by default in release
2021000 IP Protection IPPOnboardingMessageHelper.observe should check if subject is null before calling QueryInterface
2021035 Onboarding Make the brand refresh onboarding the default onboarding experience in the onboarding manifest
2018196 Other
2016368 Other
2016374 Other
2019302 Other
2014857 Other
2019112 Other
2019811 Other
  1. OOM | small (18.22%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::GetGCKindSlots (6.57%) 1472062
  3. js::gc::detail::ChunkPtrHasStoreBuffer (4.66%) 1980548
  4. AsyncShutdownTimeout | profile-before-change-telemetry | CrashManager: submitting Glean crash ping(s) (2.97%) 2017910
  5. OOM | unknown | NS_ABORT_OOM | mozilla::dom::ContentChild::RecvConstructBrowser (2.54%) 2022780
  6. XREMain::XRE_main (2.33%) 1928888
  7. EnterJit (2.12%) 1848584
Uplifts and Backouts
Bug Component Summary
2006018 Tabbed Browser: Split View [linux] Tab bar height is increased when a Split View is created
2011962 Bookmarks Edit bookmark(s) (or bookmark-folders): Spaces are ignored when typed at the end of the bookmark name (or folder name)
2015359 JavaScript: GC Assertion failure: element, at ds/SinglyLinkedList.h:77
2018218 Settings UI Add granular telemetry for AI Controls preference changes
2019515 Graphics Video Quality regression when using Nvidia VSR compared to 147
2019925 Tabbed Browser: Split View Using the `Move tab to Split View` option on a Split View that is not in a group will not displaye the Split View as expected
2020300 Untriaged Iframe load event doesn't fire after content script injects style element
2020410 Settings UI Search suggestion settings are visible when `browser.urlbar.quicksuggest.enabled` is `false`
2020553 Privacy: Anti-Tracking Correct the collection frequency of some canvas hashes
2020926 Tabbed Browser: Split View Dragging a group label that contains a Split View to an existing window pin area will pin the Split View
2021581 UI Tests Almost perma [tier2] org.mozilla.fenix.ui.SettingsSearchTest#verifyShowSearchSuggestionsToggleTest | androidx.compose.ui.test.ComposeTimeoutException: Condition (exactly 1 nodes match - when Gecko 150 merges to beta on 2026-03-23
2017513 Other
2017622 Other
2020174 Other
2018102 Other
2018103 Other
2019372 Other
2016329 Other
2016349 Other
2016351 Other
2020906 Other
2020275 Other
2019287 Other
  1. OOM | small (18.97%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (3.42%) 1472062
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (3.08%) 1969401
  4. js::gc::detail::ChunkPtrHasStoreBuffer (2.95%) 1980548
  5. js::gc::HeaderWord::get (2.48%) 1993404
  6. EnterJit (2.14%) 1848584
  7. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (2.01%) 1877111
Uplifts and Backouts
Bug Component Summary
1879118 Task Configuration Coalesce beta CI runs
2006631 Homepage Replace BrowsingModeManager used for state with AppStore
2009823 Homepage Have mode persist after dispatching BrowsingModeManagerModeChanged
2012254 Tabs Custom Tabs' 3-dot-menu is purple (private-browsing-themed), if Firefox Nightly has a private tab in the foreground
2014684 Tabbed Browser: Split View Dragging a group label that contains a Split View will show it in an unexpected position if the group is placed on the right side of the browser
2014732 IP Protection Add support for an use only for theses domains list
2015252 Tabbed Browser: Split View Add 'reverse tabs' menu option to the tab context menu for tabs in a Splitview
2015553 IP Protection Set paused state in the IPProtectionPanel when proxy is paused
2016344 IP Protection Websites excluded from VPN show the real location when custom proxy is used and VPN is on
2016380 DOM: Core & HTML Edge case CSP Violations needs fixing
2016451 Widget: Gtk Dragging CJK text from external apps to Firefox results in corrupted characters (U+FFFD)
2017030 Tabbed Browser: Split View Split view is incorrectly activated for a nonsplitview tab when in a collapsed tab group that is dragged
2017484 IP Protection Add metric for IPP enrollment
2017506 JavaScript Engine Negative memory values when you run the testcase from bug 1952626 more than once
2018848 General failed to calculate checksum of: ../work/firefox-149.0/third_party/rust/wast/tests/.gitattributes
2019177 Tabs Custom Tabs' system tray & navbar are purple (private-browsing themed), if Firefox Nightly has a private tab in the foreground
2019539 Crash Reporting [macOS] The crash reporter is not displayed if Firefox crashes a second time
2019661 Agent Prompts shouldn't be automatically closed when only WebDriver classic is used
2020223 Graphics: Text Update FreeType to 2.14.2
2020503 IP Protection Add metric for button clicked in IPProtectionAlertManager
2020735 IP Protection The bandwidth warnings in the VPN panel have UI issues
2020913 IP Protection VPN main panel shown instead of ‘Get started’ after re-adding to toolbar post 2nd CFR dismissal
2020927 DOM: Navigation RichTextArea of GWT project is broken in Firefox 148
2020953 DOM: Navigation Tolerate %VERSION% as a CKEditor 4 version number in the compatibility hack
2020957 IP Protection "Learn more" links from about:preferences return 404
2021130 Crash Reporting Do not submit ProcessType for main process crash report submissions
2021236 IP Protection VPN changes to off state automatically when the VPN panel is reopened
2021306 IP Protection [L10n] Messaging add-on (infobar) not translated
2021475 Disability Access APIs Assertion failure: accessible->IsCombobox(), at /builds/worker/checkouts/gecko/accessible/base/nsAccessibilityService.cpp:894
2021724 IP Protection Replace 3 strings in accordance with legal guidance
2018253 Other
2017801 Other
2020617 Other
2016367 Other
2017643 Other
2017521 Other
2015091 Other
  1. OOM | small (18.10%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::GetGCKindSlots (3.05%) 1472062
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (2.72%) 1472062
  4. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (2.54%) 1969401
  5. js::gc::detail::ChunkPtrHasStoreBuffer (2.49%) 1980548
  6. AsyncShutdownTimeout | IOUtils: waiting for profileBeforeChange IO to complete | JSON store: writing data for 'targeting.snapshot' (1.89%) 1877111
  7. OOM | unknown | NS_ABORT_OOM | mozilla::dom::ContentChild::RecvConstructBrowser (1.80%) 2022780
Uplifts and Backouts
Bug Component Summary
2007802 Tabbed Browser: Split View Account for tabs in a splitview in the tab list
2007950 Address Bar Favicon is misaligned in Firefox Suggest results on certain conditions (302 redirect?)
2014417 Messaging System Hitting the Escape key on the TOU modal frame will close the TOU modal
2014459 Tabbed Browser "New" badging on tab note in tab hover preview panel
2017243 PDF Viewer High frequency Assertion failure: ((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1))), at /builds/worker/workspace/obj-build/dist/include/nsILoadInfo.h:507
2018915 Search Home screen widget toggle remains OFF when adding a widget while there is already one added
2019364 Privacy: Anti-Tracking Collect WebGL's context attributes that are affected by hardware/prefs
2019759 Disability Access APIs Crash in [@ IPCError-browser | RecvSetEmbedderAccessible Attempt to embed doc which already has an embedder]
2019763 Disability Access APIs Crash in [@ IPCError-browser | AddChildDoc Attempt to add child doc which already has a parent]
2020094 Disability Access APIs Perma accessible/tests/browser/e10s/browser_caching_states.js | wrong state bits for [role: document, address: [xpconnect wrapped nsIAccessible]]!got '0', expected 'busy'
2020369 Tabbed Browser `New` badge for “Add Split View” context menu is not green on Windows and Linux as specified in Figma
2020859 IP Protection Add an entrypoint option for IPP enroll
2020961 IP Protection About:preferences has UI inconsistencies compared to Figma
2021592 Graphics 72.64 - 47.25% offscreencanvas_webcodecs_worker_webgl_vp9 offscreencanvas_webcodecs_worker_webgl_vp9 Mean time across 100 frames: + 11 more (Linux) regression on Wed March 4 2026
2021607 Onboarding Onboarding progress-dots look off-center at the bottom of refreshed onboarding screen, because the dots for viewed cards have extremely low contrast against the background color
2022221 Privacy: Anti-Tracking "Fix major site issues" setting under Strict Tracking Protection does not persist after restart
2022281 General action.openPopup() should reject if another panel or context menu is open
2022476 DOM: Navigation Look for __gwt_activeModules instead of GwtPotentialElementShim in the GWT compat hack
2019309 Other
2019808 Other
2017894 Other
2022034 Other
2016373 Other
2018113 Other
2020091 Other
2021925 Other
2021627 Other
2018430 Other
2011129 Other
2018379 Other
2022243 Other
2022676 Other
  1. OOM | small (16.22%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (3.77%) 1472062
  3. js::gc::detail::ChunkPtrHasStoreBuffer (3.00%) 1980548
  4. EnterJit (2.84%) 1848584
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (2.23%) 1969401
  6. js::gc::HeaderWord::get (2.08%) 1993404
  7. AsyncShutdownTimeout | quit-application | newtabTrainhopAddon scheduleUpdateTrainhopAddonState shutting down (1.92%) 2016440
Uplifts and Backouts
Bug Component Summary
2007810 New Tab Page new tab page always empty/gray/grey, tab tooltip shows it as about:blank but settings list about:newtab as url to open
2014304 Audio/Video tab preview for netflix oddly corrupted
2014420 Messaging System Unable to Navigate from the TOU Manage Diagnostic button to the Continue button using the Tab key
2015551 IP Protection Update IPP sign up link parameters
2019952 New Tab Page AboutNewtabResourceMapping should not return a null addonVersion when using the built-in instance of newtab
2020556 Networking Intermittent application crashed [@ mozilla::net::DocumentLoadListener::FinishReplacementChannelSetup] | single tracking bug
2020773 General userScripts in MV2 sandbox does not have a fix for the structuredClone regression
2021482 DOM: Security CSP errors related to the recent about:blank change, possibly specific to iframes
2021902 WebExtensions [Regression] Incorrect AddonUpdaterWorker initialization due to WorkFactory using reflection
2022372 Frontend tabs.move() does not return tabs that were moved in a split view
2022389 WebAuthn Passkeys no longer function properly
2022584 Other startup crash in content processes with Trellix on ARM64
2022612 UI Tests Span API ends and trim devices in robo-arm config
2022643 Preferences: Backend Allow UTF-8 BOM at the beginning of a pref file
2023178 Toolbar Set report site issue feature for release to default true
2023383 Graphics use image::SurfaceCache::IsLegalSize over gfx::Factory::AllowedSurfaceSize in SourceSurfaceSharedDataWrapper
2020190 Other
2016661 Other
2016664 Other
2021863 Other
2022351 Other
2015267 Other
2020030 Other
2022733 Other
  1. OOM | small (16.77%) Known top crash
  2. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateTenuredCellInGC (4.57%) 1472062
  3. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::AllocateTenuredCellInGC (3.66%) 1921815
  4. XREMain::XRE_main (3.35%) 1928888
  5. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::TenuringTracer::allocCell (2.13%)
  6. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::AutoEnterOOMUnsafeRegion::crash | js::Nursery::maybeMoveRawBufferOnPromotion (1.83%) 1472062
  7. OOM | unknown | js::AutoEnterOOMUnsafeRegion::crash_impl | js::gc::FreeSpan::allocate (1.83%) 1969401
Uplifts and Backouts
Bug Component Summary
1986801 SVG Intermittent svg/text/simple-anchor-end-bidi.svg == svg/text/simple-anchor-end-bidi-ref.html | single tracking bug
2007259 Storage: Cache API Perma for some test platforms TEST-UNEXPECTED-ERROR | dom/cache/test/marionette/test_caches_delete_cleanup_after_shutdown.py CachesDeleteCleanupAtShutdownTestCase.test_ensure_cache_cleanup_after_unclean_restart | marionette_driver.
2015935 Nimbus Desktop Client Adding Adaptive Performance Prefs to Nimbus Manifest
2020303 Settings UI Confusing/wrong string for pop-up and third-party redirect exceptions
2020546 JavaScript: WebAssembly Ion optimization bug: `WasmI31RefGet` congruent_to ignores semantic argument `wideningOp`
2020992 Layout: Images, Video, and HTML Frames Video tag with object-fit and sizes defined are overflowed if `overflow:hidden` is defined
2021440 IP Protection Always authenticate when enrolling to use the VPN
2021555 IP Protection 1GB of bandwidth is used at VPN turn ON
2022273 Settings UI Browser layout preferences: icons for horizontal tabs and vertical tabs have double shadows and borders
2022322 IP Protection Remove rechecking the bandwidth usage on IPP panel open
2022473 Widget: Gtk Drag and drop not working in Firefox 148 XWayland
2022587 IP Protection Refresh the bandwidth usage when IPPProxyManager stops
2022614 Onboarding Clean up the onboarding refresh layout
2022865 IP Protection Error displayed before PAUSED state when max bandwidth limit is exceeded
2023015 IP Protection IPPProxyManager connection is not stopped when paused while activating
2023291 IP Protection Update upgrade link UTM params
2023389 Performance Monitoring SVG favicons are not displayed in about:processes
2023509 Onboarding Page indicator should not leave trace
2023750 IP Protection Refresh VPN usage when an entitlement exists for an account.
2022090 Other
2020699 Other
2021922 Other
2022567 Other
2021695 Other
2022351 Other
2022478 Other
2023384 Other

Last beta shipped

Uplifts and Backouts
Bug Component Summary
1855364 General High frequency toolkit/components/extensions/test/mochitest/test_ext_browserAction_openPopup_windowId.html | single tracking bug