Bug 1611449 R[Core:Audio/Video: Recording]Permafailing /mediacapture-record/MediaRecorder-no-sink.https.html | PeerConnection MediaRecorder records video from PeerConnection without sinks - expected TIMEOUT when Gecko 74 merges to Beta on 2020-02-10
Bug 1611658 R[Core:Audio/Video: cubeb]Unship cubeb's PulseAudio C backend now that Rust backend is default
Bug 1611043 R[Core:CSS Parsing and Computation]Convert mask-type #defines to an enum class.
Bug 1611713 R[Core:CSS Parsing and Computation]Remove TextControlState::GetParentNumberControl
Bug 1301399 R[Core:DOM: Navigation]ASSERTION: no SHEntry for a non-transient viewer?: 'NS_IsAboutBlank(mCurrentURI)
Bug 1609662 R[Core:DOM: Selection]Extend documentation of methods around `Selection::AddRangeAndSelectFramesAndNotifyListeners`
Bug 1611686 R[Core:JavaScript Engine]Permafailing /optional-chain.js:49: Error: TypeError has wrong message!, expected can't access property "b", (intermediate value).a is undefined but got (intermediate value).a is undefined item 1 when Gecko 74 merges to Beta on 2020-02-10
Bug 1610412 R[Core:JavaScript: GC]Intermittent js/xpconnect/tests/mochitest/test_finalizationGroup.html | undefined assertion name - got 1, expected +0
Bug 1609889 N[Core:Javascript: WebAssembly]Separate wasm return values from calls in inlined Ion-to-Wasm calls
Bug 1609887 R[Core:Javascript: WebAssembly]Prevent uses of webassembly results from being reordered past another webassembly result
Bug 1611724 R[Core:Layout: Grid][css-grid] align-content:baseline fails for single-line block grid items
Bug 1599046 R[Core:Privacy: Anti-Tracking]Moving the ContentBlockingLog to the parent process
Bug 1607770 R[Core:Storage: Quota Manager]Extend or drop telemetry for QuotaManager initialization time because it will stop recording working when the Firefox version increases to 75 on 2020-02-10
Bug 1558526 R[Core:Web Audio]registerProcessor likely crashes if aProcessorCtor.prototype.process is null
Bug 1599952 R[Core:Web Audio]Initialize AudioWorkletNode.port and AudioWorkletProcessor.port
Bug 1611454 R[Core:WebRTC]Perma late beta browser/base/content/test/webrtc/browser_devices_get_user_media_in_frame.js | uncaught exception - TypeError: notification.options.checkbox is undefined.../PopupNotifications.js when Gecko 74 merges to Beta on 2020-02-10
Bug 1611486 N[Core:WebRTC: Audio/Video]Cherry-pick Upstream X11 Mouse Cursor Fixes
Bug 1610974 R[Core:Widget]error about designated initializer in LookAndFeelInt
Bug 1611642 R[DevTools:Console]Force the eager evaluation result box to LTR
Bug 1611099 R[DevTools:Inspector: Rules]The tooltip is no longer shown when hovering over a stylesheet URL in the Browser Toolbox rule-view
Bug 1611007 R[DevTools:Inspector: Rules][Inactive CSS] Small wording tweak to z-index/top/right/bottom/left position warning
Bug 1606928 A[Firefox:Address Bar]Modify the Top Sites API to store a favicon for “Tippy Top Sites”
Bug 1610923 R[Firefox:New Tab Page]Point npm run testmc to use mach to avoid error with linting
Bug 1611599 R[Firefox Build System:Source Code Analysis]gcc-10: Fails to build with mozcontainer.cpp:335:13: error: Not available before [-Werror]
Bug 1607582 R[Toolkit:Telemetry]Intermittent toolkit/components/telemetry/tests/unit/test_PingSender.js failing on the Linux coverage build
Bug 1609000 R[WebExtensions:Untriaged]nsIControllers.removeController fails on extension shutdown
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Changes to 29 bugs - 26 fixed.
2 bugs are not included due to being restricted