Bug 1688323 R[Core:Graphics: WebRender]Refactor WR gradient shaders to avoid duplication
Bug 1686463 R[Core:Internationalization]Gather telemetry about the reload rate caused by chardetng
Bug 1682919 R[Core:Panning and Zooming]Top and bottom of the page flicker when scroll with scroll up/down button
Bug 1688312 R[Core:Performance]Consider to use nsAtoms in PerformanceEntry
Bug 1688004 R[Core:Web Painting]Fix top layer image painting in the browser chrome.
Bug 1687879 R[Core:Widget]layout/xul/test/test_splitter.xhtml fails with the non-native theme enabled
Bug 1688132 R[DevTools:Inspector: Compatibility]Update MDN compat data (2021 Jan 4th week)
Bug 1688400 R[DevTools:Performance Tools (Profiler/Timeline)]Typo in about:profiling (perftools-thread-dom-worker)
Bug 1670094 R[Toolkit:Video/Audio Controls][RTL] Picture-in-Picture explainer text is in reverse
Bug 1678351 R[Toolkit:Video/Audio Controls]Remove dead code in videocontrols.css
Bug 1626600 R[Toolkit:Video/Audio Controls]Do not allow Picture-in-Picture via the context menu on a video that has not loaded anything yet
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Changes to 11 bugs - 11 fixed.