Bug 304866

Summary:	REGRESSION(304018@main): Triggers assertions in iOS API tests
Product:	WebKit	Reporter:	Jonathan Bedard <jbedard>
Component:	New Bugs	Assignee:	rupin
Status:	NEW
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:
Bug Blocks:	303618

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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