• Fixed a bug making it impossible to use touch or a stylus to drag the scrollbar on pages (bug 1787361).

• Fixed an issue causing some users to crash in out-of-memory conditions (bug 1774155).

• Fixed an issue that would sometimes affect video & audio playback when loaded via a cross-origin iframe src attribute (bug 1781759).

• Fixed an issue that would sometimes affect video & audio playback when served with Content-Security-Policy: sandbox (bug 1781063).

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Available via the internal updater:   Help / Firefox