The following layout test is flaky timeout on macOS Debug WK1 inspector/codemirror/prettyprinting-css.html Probable cause: Unknown, this test has been flaky for a long time. The test usually completes in ~10 seconds, but frequently times out on macOS Debug WK1 bots. Previously documented in https://bugs.webkit.org/show_bug.cgi?id=170615 Flakiness Dashboard: https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=inspector%2Fcodemirror%2Fprettyprinting-css.html
Marked test as slow in https://trac.webkit.org/r237356
(In reply to Ryan Haddad from comment #1) > Marked test as slow in https://trac.webkit.org/r237356 The test is passing consistently now.
<rdar://problem/45557151>