315211 2026-05-20 10:20:15 -0700 REGRESSION(313507@main): [macOS Debug] ASSERTION FAILED: !activeOrigin->isSameOriginDomain(targetOrigin) 2026-05-20 14:35:10 -0700 1 1 1 Unclassified WebKit DOM WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 1 darbinyan webkit-unassigned a_tarbinian sihui_liu webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 2212588 0 darbinyan 2026-05-20 10:20:15 -0700 There are tests that are flaky crashing with assertions in Debug. Failed tests: http/tests/site-isolation/page-lifecycle/unload.html http/tests/site-isolation/page-lifecycle/pagehide.html http/tests/site-isolation/page-lifecycle/pageswap.html Errors: ASSERTION FAILED: !activeOrigin->isSameOriginDomain(targetOrigin) /Volumes/Data/worker/macOS-Tahoe-Debug-Build-EWS/build/Source/WebCore/page/DOMWindow.cpp(967) : String WebCore::DOMWindow::crossDomainAccessErrorMessage(const LocalDOMWindow &, IncludeTargetOrigin) 1 0x30703a670 WebCore::DOMWindow::crossDomainAccessErrorMessage(WebCore::LocalDOMWindow const&, WebCore::IncludeTargetOrigin) 2 0x305b999fc WebCore::remoteFrameAccessError(JSC::JSGlobalObject*, WebCore::DOMWindow&) 3 0x305b99960 WebCore::BindingSecurity::shouldAllowAccessToDOMWindow(JSC::JSGlobalObject&, WebCore::DOMWindow*, WTF::String&) 4 0x305b99a64 WebCore::BindingSecurity::shouldAllowAccessToDOMWindow(JSC::JSGlobalObject&, WebCore::DOMWindow&, WTF::String&) 5 0x305bb3f40 WebCore::JSDOMWindow::getOwnPropertySlot(JSC::JSObject*, JSC::JSGlobalObject*, JSC::PropertyName, JSC::PropertySlot&) 6 0x13245f454 JSC::JSGlobalProxy::getOwnPropertySlot(JSC::JSObject*, JSC::JSGlobalObject*, JSC::PropertyName, JSC::PropertySlot&) 7 0x13184dd44 JSC::JSObject::getNonIndexPropertySlot(JSC::JSGlobalObject*, JSC::PropertyName, JSC::PropertySlot&) 8 0x13184d150 bool JSC::JSObject::getPropertySlot<false>(JSC::JSGlobalObject*, JSC::PropertyName, JSC::PropertySlot&) 9 0x13232d7cc JSC::JSValue::getPropertySlot(JSC::JSGlobalObject*, JSC::PropertyName, JSC::PropertySlot&) const 10 0x1320f47d0 JSC::JSValue::get(JSC::JSGlobalObject*, JSC::PropertyName, JSC::PropertySlot&) const Test history: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&test=http%2Ftests%2Fsite-isolation%2Fpage-lifecycle%2Fpageswap.html&test=http%2Ftests%2Fsite-isolation%2Fpage-lifecycle%2Fpagehide.html&test=http%2Ftests%2Fsite-isolation%2Fpage-lifecycle%2Funload.html&style=debug Test results: https://ews-build.webkit.org/#/builders/161/builds/31035 2212589 1 webkit-bug-importer 2026-05-20 10:20:37 -0700 <rdar://problem/177538560> 2212603 2 ews-feeder 2026-05-20 11:12:22 -0700 Test gardening commit 313585@main (b0ee12ebe50a): <https://commits.webkit.org/313585@main> Reviewed commits have been landed. Closing PR #65308 and removing active labels.