imported/w3c/web-platform-tests/html/dom/dynamic-markup-insertion/opening-the-input-stream/011.html flaky on macOS High Sierra WK2 but is timing out far more than running normally. Dashboard results: https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fdom%2Fdynamic-markup-insertion%2Fopening-the-input-stream%2F011.html build: https://build.webkit.org/results/Apple%20High%20Sierra%20Release%20WK2%20(Tests)/r223712%20(559)/results.html https://build.webkit.org/builders/Apple%20High%20Sierra%20Release%20WK2%20(Tests)/builds/559 This does not appear to be a recent regression but has begun to be more consistent. The test generally times out at ~35 seconds but will spike up to ~50-70 seconds.
This test is still timing out more than it is passing on High Sierra Release WK2. Marking as skip for now in: https://trac.webkit.org/changeset/223932/webkit