imported/w3c/web-platform-tests/css/css-scoping/css-scoping-shadow-dynamic-remove-style-detached.html is a flaky failure on Mac. History: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-scoping%2Fcss-scoping-shadow-dynamic-remove-style-detached.html&limit=50000&platform=mac Diff: --- /Volumes/Data/worker/bigsur-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/css/css-scoping/css-scoping-shadow-dynamic-remove-style-detached-expected.txt +++ /Volumes/Data/worker/bigsur-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/css/css-scoping/css-scoping-shadow-dynamic-remove-style-detached-actual.txt @@ -1,3 +1,3 @@ -PASS Invalidation of style data while ShadowRoot is disconnected. +FAIL Invalidation of style data while ShadowRoot is disconnected. assert_not_equals: got disallowed value "rgb(255, 0, 0)" Issue appears to be a regression ~r280122 Reproduced on r280292 using run-webkit-tests -f --iterations 500 --clobber-old-results --exit-after-n-failures 1 imported/w3c/web-platform-tests/css/css-scoping/css-scoping-shadow-dynamic-remove-style-detached.html. Will bisect and update.
<rdar://problem/81138404>
Updated test expectations at https://trac.webkit.org/changeset/280331/webkit.
<rdar://problem/81138544>