Bug 1611431 R[Core:Audio/Video: Playback]Generate mp4parse-rust bindings as part of mach build
Bug 1609452 R[Core:Audio/Video: Playback]Modify media playback state of media center according to the event source playback state
Bug 1611829 R[Core:CSS Parsing and Computation]Convert scroll-behavior #defines to an enum class.
Bug 1610054 R[Core:DOM: Core & HTML]Prevent infinite recursion when upgrading custom elements
Bug 1301399 R[Core:DOM: Navigation]ASSERTION: no SHEntry for a non-transient viewer?: 'NS_IsAboutBlank(mCurrentURI)
Bug 1606655 R[Core:DOM: UI Events & Focus Handling]Alt Codes Malfunction with the Programmer Dvorak Keyboard Layout
Bug 1605283 N[Core:Graphics: WebRender]Improve support for invalidation debugging and testing
Bug 1611743 R[Core:Graphics: WebRender]Handle IDCompositionSurface::BeginDraw() error
Bug 1611547 R[Core:IPC]MacProcessLauncher::DoFinishLaunch never calls the superclass method
Bug 1607153 R[Core:IPC]ThreadSanitizer: data race [@ IPC::Channel::ChannelImpl::ProcessIncomingMessages] vs. [@ GetClientFileDescriptorMapping]
Bug 1608808 R[Core:JavaScript Engine]Eliminate extra environment for eval in parameter initializers redux
Bug 1609956 R[Core:JavaScript: GC]Discourage atoms zone collection during page load
Bug 1609889 N[Core:Javascript: WebAssembly]Separate wasm return values from calls in inlined Ion-to-Wasm calls
Bug 1611561 R[Core:Layout]Mousewheel zoom does not always work on freshly-loaded file:// documents
Bug 1611314 R[Core:Layout: Floats]Intermittent /css/css-shapes/shape-outside/shape-image/gradients/shape-outside-linear-gradient-013.html | Testing http://web-platform.test:8000/css/css-shapes/shape-outside/shape-image/gradients/shape-outside-linear-gradient-013.html
Bug 1611661 R[Core:Layout: Form Controls]Number inputs in Google calendar don't work right with arrow keys
Bug 1611951 R[Core:Layout: Grid]Add basic documentation of the members of ComputedGridTrackInfo
Bug 1603354 R[Core:Layout: Ruby]Ruby in Firefox 71 is displaying incorrectly.
Bug 1606927 A[Core:Security: PSM]Upgrade Firefox 74 to use NSS 3.50
Bug 1605223 R[Core:Web Painting]Assertion failure: false (unknown func type?), at src/layout/svg/nsFilterInstance.cpp:113
Bug 1604877 R[Core:XPCOM]Move the nsSystemInfo helper thread work to the background event target
Bug 1611130 V[DevTools:Console]Perma devtools/client/webconsole/test/browser/browser_webconsole_in_line_layout.js | Uncaught exception - at chrome://mochitests/content/browser/devtools/client/webconsole/ when Gecko merges to Beta on on 2020-02-10
Bug 1611815 R[DevTools:Performance Tools (Profiler/Timeline)]performance-new in devtools is broken, as it doesn't handle the presetName
Bug 1611271 R[Firefox:Address Bar]macOS Urlbar border is hard to make out
Bug 1593886 A[Firefox:Address Bar][Dark theme] Re-evaluate the contrast between urls and the lighter background
Bug 1610298 N[Firefox:Messaging System]Preview messages don't belong to a provider
Bug 1216186 R[Firefox:Migration]Chromium and Canary bookmarks are imported into "From Google Chrome" on non-startup migration
Bug 1582738 R[Firefox:Migration]When importing saved Chrome passwords on mac, don't cause a keychain prompt if there are no rows to import
Bug 1610840 R[Firefox:Search]Remove WebExtension.version from the modern search engine config and update docs
Bug 1611689 V[Firefox:Toolbars and Customization]Text in Search Bar are deleted after exit DOM FullScreen
Bug 1597993 R[Firefox:about:logins]Keyboard navigation gets trapped in the Login Item
Bug 1605188 R[Firefox Build System:General]Update builders to rustc 1.40
Bug 1599930 R[Firefox for Android:Testing]Support --no-install for Android web platform tests
Bug 1574322 R[Thunderbird:Folder and Message Lists]Thunderbird freezes/hangs upon opening folder Properties window on Mac
Bug 1609069 R[Toolkit:Add-ons Manager]Clicking empty area below the categories list navigates back to the main list
Bug 1609649 R[Toolkit:Crash Reporting]Strip the TelemetryClientId and TelemetryServerURL annotations from the crash submissions
Bug 1610993 R[Toolkit:Video/Audio Controls]PiP overlaps Instagram's next photo/video button
Bug 1606195 R[Toolkit:Video/Audio Controls]PiP - Problem with Udemy "Next video" arrow. The arrow appears in the from of PiP button
Bug 1608425 R[Toolkit:Video/Audio Controls]The picture-in-picture button is hidden beneath other buttons that are present on the page on twitch.tv
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Changes to 40 bugs - 31 fixed.
1 bugs are not included due to being restricted