RESOLVED FIXED265936
[web-animations] accelerated CSS Animation should not schedule animation resolution at iteration boundary if no CSS Animation event listener was registered (affects reddit.com) 
https://bugs.webkit.org/show_bug.cgi?id=265936
Summary [web-animations] accelerated CSS Animation should not schedule animation reso...
Antoine Quint
Reported 2023-12-06 02:30:58 PST
If a CSS Animation is accelerated it will currently schedule animation resolution when its current iteration ends in order to dispatch an `animationiteration` event. However, it's likely that the content does not listen to such events and so we could avoid scheduling animation resolution in this case. This affects reddit.com which chews some CPU scheduling animation frames once every second for an infinitely-repetitive animation that lasts 1 second.
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Radar WebKit Bug Importer
Comment 1 2023-12-06 02:31:15 PST
<rdar://problem/119244430>
Antoine Quint
Comment 2 2023-12-06 02:38:16 PST
Pull request: https://github.com/WebKit/WebKit/pull/21385
EWS
Comment 3 2023-12-06 05:57:54 PST
Committed 271604@main (4a38bbbd7547): <https://commits.webkit.org/271604@main> Reviewed commits have been landed. Closing PR #21385 and removing active labels.
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