Bug 306427

Summary: [threaded-animations] WPT test `css/css-contain/content-visibility/content-visibility-animation-in-auto-subtree.html` fails with "Threaded Time-based Animations" enabled
Product: WebKit Reporter: Antoine Quint <graouts>
Component: AnimationsAssignee: Antoine Quint <graouts>
Status: RESOLVED FIXED    
Severity: Normal CC: graouts, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Antoine Quint
Reported 2026-01-28 07:58:59 PST
The WPT test `css/css-contain/content-visibility/content-visibility-animation-in-auto-subtree.html` fails with "Threaded Time-based Animations" enabled. It appears we are entering the accelerated animation code path when reading the computed style, but that animation should not be accelerated.
Attachments
Radar WebKit Bug Importer
Comment 1 2026-01-28 07:59:13 PST
Antoine Quint
Comment 2 2026-01-28 08:06:27 PST
EWS
Comment 3 2026-01-28 09:44:10 PST
Committed 306355@main (2d110664327e): <https://commits.webkit.org/306355@main> Reviewed commits have been landed. Closing PR #57408 and removing active labels.
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