Created attachment 392144 [details] attributes-accent-accentunder-dynamic-diff mathml/presentation/attributes-accent-accentunder-dynamic.html Description: This test is flaky failing on Mac wk1 Debug. History: https://results.webkit.org/?suite=layout-tests&test=mathml%2Fpresentation%2Fattributes-accent-accentunder-dynamic.html&platform=mac&style=debug&limit=50000&flavor=wk1 Diff: https://build.webkit.org/results/Apple-Catalina-Debug-WK1-Tests/r257707%20(2815)/mathml/presentation/attributes-accent-accentunder-dynamic-diff.png
<rdar://problem/59952047>
I have marked this test as flaky failing on images while this issue is investigated. https://trac.webkit.org/changeset/257715/webkit
I am able to reproduce this issue with r257710 by running the command below. run-webkit-tests --iterations 2000 --exit-after-n-failures 1 --no-retry --force -f --debug -1 mathml/presentation/attributes-accent-accentunder-dynamic.html [7/2000] mathml/presentation/attributes-accent-accentunder-dynamic.html failed unexpectedly (reference mismatch) Exiting early after 1 failures. 4 tests run. 3 tests ran as expected, 1 didn't (1996 didn't run):