Description: compositing/animation/repaint-after-clearing-shared-backing.html The first failure that I see this on the dashboard was 09/12/20 at r266974, but is not relevant to what would have caused this. The test was introduced at r266972 and has been flaky failure since then. The test was expecting a fader margin: 50px;height: 200px;background-color: rgba(255, 255, 255, 0.5); but returned fader with larger width and position higher. REPRODUCTION STEPS Command: run-webkit-tests --exit-after-n-failures 1 --iterations 50 --debug compositing/animation/repaint-after-clearing-shared-backing.html Result: Regressions: Unexpected image-only failures (1) compositing/animation/repaint-after-clearing-shared-backing.html [ ImageOnlyFailure ] History: https://results.webkit.org/?suite=layout-tests&test=compositing%2Fanimation%2Frepaint-after-clearing-shared-backing.html&limit=50000&platform=mac&style=debug&flavor=wk2 Image Results: https://build.webkit.org/results/Apple-Mojave-Debug-WK2-Tests/r268273%20(12483)/compositing/animation/repaint-after-clearing-shared-backing-diffs.html
<rdar://problem/70157935>
I have marked this test as image only failure while this issue is investigated. https://trac.webkit.org/changeset/268297/webkit
Created attachment 413152 [details] Patch
Committed r269367: <https://trac.webkit.org/changeset/269367>