[Webkit-unassigned] [Bug 220226] Audio elements block WebContent UI thread, causing multi-second rendering delays scrolling a real webpage

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220226

Alexey Proskuryakov <ap at webkit.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cdumez at apple.com,
                   |                            |eric.carlson at apple.com,
                   |                            |jer.noble at apple.com,
                   |                            |peng.liu6 at apple.com,
                   |                            |simon.fraser at apple.com,
                   |                            |webkit-bug-importer at group.a
                   |                            |pple.com, zalan at apple.com
            Summary|Audio elements break        |Audio elements block
                   |rendering                   |WebContent UI thread,
                   |                            |causing multi-second
                   |                            |rendering delays scrolling
                   |                            |a real webpage

--- Comment #1 from Alexey Proskuryakov <ap at webkit.org> ---
I can reproduce multi-second rendering delays scrolling this page on an Apple Silicon Mac.

WebContent main thread is blocked running -[AVPlayerItemTrack isEnabled] via WebCoreAVFMovieObserver.

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