RESOLVED FIXED311810
REGRESSION(310666@main): requestAnimationFrame and requestVideoFrameCallback callbacks are not fired in isolated worlds when JS is disabled in the main page. 
https://bugs.webkit.org/show_bug.cgi?id=311810
Summary REGRESSION(310666@main): requestAnimationFrame and requestVideoFrameCallback ...
Carlos Alberto Lopez Perez
Reported 2026-04-09 04:09:57 PDT
After 310666@main, ScriptedAnimationController::serviceRequestAnimationFrameCallbacks and HTMLVideoElement::serviceRequestVideoFrameCallbacks return early when canExecuteScripts(AboutToExecuteScript) returns false. Ideally in the call to canExecuteScripts(AboutToExecuteScript) it should be passing the isolatedWorld it belongs to, so canExecuteScripts returns true instead of false, but the problem is that both rAF and requestVideoFrameCallback are not aware of which world the callbacks were registered from, so its not possible to pass that (AFAIK). As a result, rAF and requestVideoFrameCallback callbacks registered from isolated worlds (e.g. browser extensions or injected scripts) are silently dropped when JavaScript is disabled in the main page.
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Carlos Alberto Lopez Perez
Comment 1 2026-04-09 04:24:39 PDT
Pull request: https://github.com/WebKit/WebKit/pull/62348
Radar WebKit Bug Importer
Comment 2 2026-04-09 08:36:24 PDT
<rdar://problem/174412226>
EWS
Comment 3 2026-04-13 02:17:14 PDT
Committed 311058@main (e46c5005ecf3): <https://commits.webkit.org/311058@main> Reviewed commits have been landed. Closing PR #62348 and removing active labels.
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