293642 2025-05-27 14:31:49 -0700 REGRESSION(295342@main): [iOS] imported/w3c/web-platform-tests/css/cssom/stylesheet-same-origin.sub.html is constant failure (flaky failure in EWS) 2025-06-03 21:47:10 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 darbinyan kiet.ho kiet.ho webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 2119943 0 darbinyan 2025-05-27 14:31:49 -0700 The following test is constantly failing on iOS on main and also appear as flaky test in EWS. Suspecting this failure started from 295342@main. imported/w3c/web-platform-tests/css/cssom/stylesheet-same-origin.sub.html FAIL Origin-clean check in cross-origin CSSOM Stylesheets assert_throws_dom: stylesheet.cssRules should throw SecurityError. function "function () { sheet.cssRules; }" threw object "TypeError: null is not an object (evaluating 'sheet.cssRules')" that is not a DOMException SecurityError: property "code" is equal to undefined, expected 18 -FAIL Origin-clean check in cross-origin CSSOM Stylesheets (redirect from same-origin to cross-origin) assert_throws_dom: stylesheet.cssRules should throw SecurityError. function "function () { - sheet.cssRules; - }" did not throw +PASS Origin-clean check in cross-origin CSSOM Stylesheets (redirect from same-origin to cross-origin) FAIL Origin-clean check in cross-origin CSSOM Stylesheets (redirect from cross-origin to same-origin) assert_throws_dom: stylesheet.cssRules should throw SecurityError. function "function () { sheet.cssRules; }" threw object "TypeError: null is not an object (evaluating 'sheet.cssRules')" that is not a DOMException SecurityError: property "code" is equal to undefined, expected 18 -FAIL Origin-clean check in loading error CSSOM Stylesheets assert_throws_dom: stylesheet.cssRules should throw SecurityError. function "function () { - sheet.cssRules; - }" did not throw +PASS Origin-clean check in loading error CSSOM Stylesheets PASS Origin-clean check in same-origin CSSOM Stylesheets -FAIL Origin-clean check in data:css CSSOM Stylesheets Not allowed to access cross-origin stylesheet +PASS Origin-clean check in data:css CSSOM Stylesheets Test history: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcssom%2Fstylesheet-same-origin.sub.html Test result: https://ews-build.webkit.org/#/builders/133/builds/19194 2119951 1 webkit-bug-importer 2025-05-27 14:39:09 -0700 <rdar://problem/152111622> 2119967 2 ews-feeder 2025-05-27 15:11:41 -0700 Test gardening commit 295472@main (6806868e1c8d): <https://commits.webkit.org/295472@main> Reviewed commits have been landed. Closing PR #45967 and removing active labels. 2120195 3 kiet.ho 2025-05-28 13:09:28 -0700 Pull request: https://github.com/WebKit/WebKit/pull/46009 2121585 4 ews-feeder 2025-06-03 21:47:09 -0700 Committed 295793@main (46083abd0d17): <https://commits.webkit.org/295793@main> Reviewed commits have been landed. Closing PR #46009 and removing active labels.