NEW304866
REGRESSION(304018@main): Triggers assertions in iOS API tests 
https://bugs.webkit.org/show_bug.cgi?id=304866
Summary REGRESSION(304018@main): Triggers assertions in iOS API tests
Jonathan Bedard
Reported 2026-01-02 15:05:42 PST
After 304018@main, a number of SiteIsolation tests started failing. History: https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.SiteIsolation.BasicPostMessageWindowOpen CI run: https://build.webkit.org/#/builders/1713/builds/635 Impacted tests: TestWebKitAPI.SiteIsolation.BasicPostMessageWindowOpen TestWebKitAPI.SiteIsolation.CloseAfterWindowOpen TestWebKitAPI.SiteIsolation.ClosedStatePropagation TestWebKitAPI.SiteIsolation.CrossOriginOpenerPolicyMainFrameWithSharedProcess TestWebKitAPI.SiteIsolation.DoAfterNextPresentationUpdate TestWebKitAPI.SiteIsolation.FocusOpenedWindow TestWebKitAPI.SiteIsolation.LoadHTMLString TestWebKitAPI.SiteIsolation.LoadRequestOnOpenedWebView TestWebKitAPI.SiteIsolation.LoadRequestOnOpenerWebView TestWebKitAPI.SiteIsolation.LoadStringAfterOpen TestWebKitAPI.SiteIsolation.NavigateOpenedWindowCrossSiteAfterDisowningOpener TestWebKitAPI.SiteIsolation.NavigateOpener TestWebKitAPI.SiteIsolation.NavigateOpenerToProvisionalNavigationFailure TestWebKitAPI.SiteIsolation.NavigateOpenerWindowCrossSite TestWebKitAPI.SiteIsolation.NavigationAfterWindowOpen TestWebKitAPI.SiteIsolation.OpenerProcessSharing TestWebKitAPI.SiteIsolation.ParentOpener TestWebKitAPI.SiteIsolation.SharedProcessBasicNavigation TestWebKitAPI.SiteIsolation.SharedProcessBasicWebProcessCache TestWebKitAPI.SiteIsolation.SharedProcessBasicWebProcessCacheCrash TestWebKitAPI.SiteIsolation.SharedProcessLoadIsolatedSiteInSubframeOfNewWindow TestWebKitAPI.SiteIsolation.SharedProcessMostBasic TestWebKitAPI.SiteIsolation.SharedProcessWebProcessCacheCanEvict TestWebKitAPI.SiteIsolation.SharedProcessWithResourceLoadStatistics TestWebKitAPI.SiteIsolation.SharedProcessWithWebsitePolicies TestWebKitAPI.SiteIsolation.StatusBarVisibility TestWebKitAPI.SiteIsolation.WindowOpenRedirect TestWebKitAPI.SiteIsolation.WKFrameInfo_isSameFrame Reproduction: run-api-tests --no-build --ios-simulator TestWebKitAPI.SiteIsolation.CloseAfterWindowOpen
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Radar WebKit Bug Importer
Comment 1 2026-01-02 15:05:56 PST
<rdar://problem/167455575>
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