With threaded animation resolution animations are stored differently on a GraphicsLayer and the code backing internals.acceleratedAnimationsForElement() will need to be adjusted for this.
Pull request: https://github.com/WebKit/WebKit/pull/11001
Committed 261157@main (2bbba9995b58): <https://commits.webkit.org/261157@main> Reviewed commits have been landed. Closing PR #11001 and removing active labels.
<rdar://problem/106205187>