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92 uplifts

Uplifts and Backouts
Bug Component Summary
1976929 Audio/Video: Web Codecs WebCodecs VideoDecoder frequent reset & close causes tab crash
1986095 Networking Crash in [@ mozilla::net::nsSocketTransportService::AttachSocket] with osfd < kFDs
2001887 General New XDG basedir support still creates an empty ~/.mozilla/extensions directory
2006489 Add-ons Manager Langpack can be disabled after a Firefox update, if the current langpack was updated between staging of the update+langpack and restarting
2006518 Experimentation and Telemetry Add new ToU bottom sheet strings and Nimbus variable for experimentation
2006756 Form Autofill Autofill "Select address" UI shows up on all pages with email-address-fields, if you have any address saved that includes an email address
2008101 Privacy: Anti-Tracking privacy.annotate_channels.strict_list.enabled is enabled on all Fenix channels, leads to slower page load
2008712 Experimentation and Telemetry Implement the experimental ToU strings to be used in the ToU prompt
2008739 Other startup crash in content processes with Trellix
2008777 Widget: Gtk [Wayland] firefox should not bind server version of globals
2008859 DOM: Networking [LNA] Update LNA prompt telemetry
2009849 Site Reports Sports Illustrated article reloads itself over and over in Firefox
2010411 Internationalization CLDR 48 'h' hour format is possibly web incompatible
2010440 General Bump l10n-changesets.json for 147 dot release
2010739 Networking: Cache Disable Compression Dictionaries in 147+
2010762 Networking: Cache Annotate WPT decoded-body-size-compressed.https.html as needing the compression dictionaries pref to be enabled
Uplifts and Backouts
Bug Component Summary
1959008 Address Bar Frequent browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_selected_result.js | single tracking bug
1992109 DOM: Core & HTML musicmoment.jp - Repeatedly clicking on the page logo causes the tab to crash
1999448 Autofill Empty strip remains between the keyboard and the address list in the add/edit address screen
2006468 DOM: Navigation Assertion failure: false (FIXME), at /builds/worker/checkouts/gecko/dom/navigation/Navigation.cpp:382
2007302 Privacy: Anti-Tracking CSP strict-dynamic bypass via shimmed Disqus embed code
2007637 Site Reports heinnie.com - Products do not load on the page intermittently
2008464 Security Security risk page doubles the connection port
2008698 Layout: Scrolling and Overflow Tab crashes when moving many elements that are anchor positioned
2009081 Address Bar Add adaptive history result type to address bar telemetry
2009140 Security: Process Sandboxing Crash in [@ sandbox::ParameterSet::Get]
2010042 Other Don't hook BR instructions on ARM64 and unblock inprocessclient64.dll
2010056 Printing Printing a parent process page (like about:config) with print.always_print_silent = true crashes the browser [@ mozilla::PresShell::GetRootFrame ]
2010145 Security: PSM regenerate test certificates for 2026
2010526 CSS Parsing and Computation www.emag.ro - The product image cannot be zoomed or dragged after zooming once
2010601 Layout Crash in [@ stackoverflow | nsIFrame::GetOffsetToCrossDoc]
2010608 CSS Parsing and Computation Crash in [@ mozilla::dom::ViewTransition::MatchClassList]
2010764 Design System and Theming Fenix 147.0 [@ java.lang.IllegalStateException: at androidx.fragment.app.Fragment.getParentFragmentManager(Fragment.java) ]
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.
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)
2011886 General Switch off isolated processes by default
Uplifts and Backouts
Bug Component Summary
1725177 CSS Transitions and Animations ::backdrop with animation does not work
1801938 CSS Parsing and Computation New wpt failures in /css/css-anchor-position/position-try-grid-001.html
1866930 Layout: Grid Firefox fails WPT css/css-grid/subgrid/orthogonal-writing-mode-005.html
1910616 CSS Parsing and Computation Improve Rule invalidation for `@position-try` mutation
1924792 Layout Implement position-area "shifting" for containing block overflow
1949513 New Tab Page Remove --disable-browser-newtab-as-addon flag
1951791 Layout: Flexbox Flex container gets the wrong exported baseline from orthogonal-writing-mode flex item
1985982 Layout: Positioned Defer all auto margin resolution of abspos elements after reflow
1989059 CSS Parsing and Computation Implement `position-try-order` for anchor fallbacks.
1997776 Share `146.0a1` crashes with an `IllegalStateException` because “Only owner is able to interact with pending/trashed item”.
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
2003810 Inspector Unable to re-open devtools: Permission denied to access property "isChromeWindow" on cross-origin object
2004495 Layout Use inset-modified containing block consistently for fallback / overflow checks.
2004596 Layout Deal with both position-area and grid CB adjustments together.
2004898 Web Painting Sticky header no longer renders solid without flashing when rapidly scrolling to the top of page
2005071 Networking urlpattern exec implementation differs from chrome
2006002 Layout: Positioned Anchored popover does not follow element when scrolling viewport
2006352 Layout: Positioned Set compensating for scroll state when using only anchor-center (anchor-center-scroll.html)
2006373 Layout: Positioned Revise last-successful-position-fallback implementation
2006398 Layout: Positioned anchor-center should not depend on at least one inset being auto
2006402 Layout: Positioned Check that default anchor is valid before forcing auto inset values to 0
2006499 Layout: Positioned Fix css/css-anchor-position/position-try-backdrop.html
2006513 Layout: Positioned Firefox fails a subtest in WPT /css/css-anchor-position/position-try-001.html
2006804 Layout: Positioned Firefox fails WPT /css/css-anchor-position/position-try-fallbacks-limit.html
2006959 Layout: Positioned Firefox fails /css/css-anchor-position/try-tactic-back-to-base.html
2006998 Layout: Form Controls Assertion failure: wm == outerWM (Shouldn't have to care about orthogonal writing-modes and such inside the control, except for the number spin-box which forces horizontal-tb), at /builds/worker/checkouts/gecko/layout/forms/nsTextControlFrame.cpp:669
2007156 Design System and Theming Update wordmark for Android brand refresh mvp
2007539 General DevTools tests aren't reloading the test pages like Firefox does
2008531 Layout Make nsIFrame::RemoveProperty return whether the proprety was actually removed.
2008537 Layout: Positioned position-area should implicitly apply correct justify-self value
2008650 CSS Parsing and Computation CSSPositionTryDeclaration changes don't invalidate correctly.
2008951 DOM: Navigation Fix null global getter when serializing during reload
2009017 New Tab Page Add a capability that lets us set different defaults for top sites and top stories during the first 48 hours of the default profile's lifetime
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
2009424 Layout: Positioned Make viewport containing block adjustment work for default-anchored frames.
2010365 Toolbar Firefox 148b1 for Android address bar autocorrects input
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
2010657 WebRTC script-transform.https.html times out (running for over 60 seconds) occasionally, on wpt.fyi
2010935 Nimbus SDK Force sync in fetch_experiments()
2010949 Widget: Win32 White flash across titlebar when launching Firefox in dark mode
2010958 DOM: Geolocation Add telemetry and logging for GLS location fallback observability
2011909 Other [MWStory] Crash in [@ printguard64.dll | <unknown in xul.pdb>]
2012009 New Tab Page Crash in [@ firefox_on_glean::factory::create_and_register_metric]
2012108 Audio/Video: Playback bringatrailer.com - Video appears frozen and changes the frame every 5 seconds
2012542 Graphics macOS pref `gfx.webrender.compositor`=false with gpu process draws blank window
2012950 Security: Process Sandboxing Firefox 147.0.2 UI displays garbled characters instead of proper text in settings and menus
1989340 Other …
Uplifts and Backouts
Bug Component Summary
1950282 Site Reports f1tv.formula1.com - Firefox is not a supported browser
2004982 Toolbar Seeing 2 stacking CFRs on Toolbar Redesign
2014390 Audio/Video Heap buffer overflow in libvpx
2014612 Security: PSM Permanent failures on browser_trust_panel_security_view.js, browser_identityPopup_qwacs.js and test_qwacs.js | single tracking bug
2014616 New Tab Page After the Firefox v147.0.3 update my Firefox Home is completely blank, both when I start on the page as my default or when I go to it. I tested it in Troubleshoot Mode but had the same issue.