imported/w3c/web-platform-tests/css/css-transitions/transition-base-response-002.html is a flaky text failure. History indicates the failures are occurring on BigSur Release wk2 on Apple Silicon, and on Catalina Release wk2 Intel. HISTORY: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-transitions%2Ftransition-base-response-002.html&limit=50000 TEXT DIFF: -FAIL Transitioning font-size on root affects rem units assert_equals: expected "15px" but got "16.5px" +PASS Transitioning font-size on root affects rem units Failure appears to be the same on both Catalina wk2 Release Intel, and on BigSur wk2 Release arm64.
<rdar://problem/77866295>
This test appears to have been flaky since it started running on Catalina. I was able to reproduce the failure on Catalina Debug ToT using the follow test: run-webkit-tests imported/w3c/web-platform-tests/css/css-transitions/transition-base-response-002.html --iterations 100 -f There does also appear to be an occasional failure on BigSur Intel. But it mostly occurs
(In reply to Robert Jenner from comment #2) > This test appears to have been flaky since it started running on Catalina. I > was able to reproduce the failure on Catalina Debug ToT using the follow > test: > > run-webkit-tests > imported/w3c/web-platform-tests/css/css-transitions/transition-base-response- > 002.html --iterations 100 -f > > There does also appear to be an occasional failure on BigSur Intel. But it > mostly occurs After investigating more, I would actually say this a a flaky failure on Catalina and up on wk2 only, as the history indicates it is occurring on Catalina, and BigSur in Release and Debug on Intel an arm64.
Updated test expectations to Pass Failure for macOS Release and Debug here: https://trac.webkit.org/changeset/277394/webkit