Bug 306329

Summary: [threaded-animations] several tests fail the "Unsafe to ref/deref from different threads" assertion upon dereferencing `RemoteMonotonicTimeline`
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 2026-01-27 06:04:25 PST
We have three tests that are failing the `ASSERT_WITH_MESSAGE(m_isOwnedByMainThread == isMainThread(), "Unsafe to ref/deref from different threads")`: - fast/animation/css-animation-throttling.html - webanimations/combining-transform-animations-with-different-acceleration-capabilities-6.html - webanimations/transform-animation-with-steps-timing-function-not-accelerated.html
Attachments
Radar WebKit Bug Importer
Comment 1 2026-01-27 06:04:43 PST
Antoine Quint
Comment 2 2026-01-27 06:08:16 PST
EWS
Comment 3 2026-01-27 12:39:40 PST
Committed 306297@main (ec459cc2d444): <https://commits.webkit.org/306297@main> Reviewed commits have been landed. Closing PR #57327 and removing active labels.
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