219438 2020-12-02 10:16:14 -0800 [ iOS ] fast/canvas/canvas-overflow-hidden-animation.html is a flaky failure 2021-04-08 05:40:18 -0700 1 1 1 Unclassified WebKit Canvas WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 1 tsavell webkit-unassigned dino graouts kkinnunen webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1711374 0 tsavell 2020-12-02 10:16:14 -0800 fast/canvas/canvas-overflow-hidden-animation.html It looks like the test is failing with a 1 pixel wide yellow boarder around the green square. I am able to reproduce this locally using command: run-webkit-tests --iterations 2000 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --debug-rwt-logging --no-retry --force --no-build -f --ios-simulator fast/canvas/canvas-overflow-hidden-animation.html History: https://results.webkit.org/?suite=layout-tests&test=fast%2Fcanvas%2Fcanvas-overflow-hidden-animation.html Diff: https://build.webkit.org/results/Apple-iOS-14-Simulator-Release-WK2-Tests/r270345%20(1086)/fast/canvas/canvas-overflow-hidden-animation-diffs.html 1711375 1 webkit-bug-importer 2020-12-02 10:16:32 -0800 <rdar://problem/71899754> 1711484 2 tsavell 2020-12-02 15:12:37 -0800 Marked test as failing in https://trac.webkit.org/changeset/270374/webkit 1741115 3 kkinnunen 2021-03-18 02:47:58 -0700 Happens on macOS too. 1748277 4 graouts 2021-04-08 05:40:18 -0700 The last failure was on March 18, 3 weeks ago today, on iOS 14 Simulator wk2 Release on iPhone SE (1st generation) with x86_64. Before that it was March 16, 15 and 11 on the same bot.