288888 2025-02-28 16:36:07 -0800 REGRESSION(284617@main?): [ iOS arm64 ] compositing/contents-format/deep-color-backing-store.html is a constant failure. 2025-06-17 11:42:20 -0700 1 1 1 Unclassified WebKit Compositing WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 y_karimi kiet.ho simon.fraser webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 2099480 0 y_karimi 2025-02-28 16:36:07 -0800 compositing/contents-format/deep-color-backing-store.html This test is a constant failure on iOS wk2 on iPhone 12 with arm64. HISTORY: https://results.webkit.org/?suite=layout-tests&test=compositing%2Fcontents-format%2Fdeep-color-backing-store.html TEXT DIFF: @@ -3,7 +3,6 @@ (GraphicsLayer (anchor 0.00 0.00) (bounds 5018.00 2018.00) - (deep color 1) (children 1 (GraphicsLayer (bounds 5018.00 2018.00) @@ -12,14 +11,12 @@ (tile size 512 x 512) (top left tile 0, 0 tiles grid 2 x 2) (in window 1) - (deep color 1) (children 2 (GraphicsLayer (position 18.00 10.00) (bounds 100.00 100.00) (contentsOpaque 1) (drawsContent 1) - (deep color 1) ) (GraphicsLayer (position 18.00 120.00) @@ -31,7 +28,6 @@ (tile size 512 x 512) (top left tile 0, 0 tiles grid 2 x 1) (in window 1) - (deep color 1) ) ) ) DIFF URL: https://build.webkit.org/results/Apple-iOS-18-Simulator-Release-WK2-Tests/291358@main%20(871)/compositing/contents-format/deep-color-backing-store-pretty-diff.html REPRODUCIBILITY: I was able to reproduce this issue on the iOS 18.2 simulator at ToT using the following command: run-webkit-tests --ios-simulator --child-processes 2 -f compositing/contents-format/deep-color-backing-store.html --iterations 5 REGRESSION: According to the results dashboard and contextual information, the probable regression point is 284617@main. The code paths changed in this commit appear to be related to the observed regression test failure. 2099481 1 webkit-bug-importer 2025-02-28 16:36:17 -0800 <rdar://problem/145890758> 2099505 2 ews-feeder 2025-02-28 17:37:28 -0800 Test gardening commit 291411@main (564640088318): <https://commits.webkit.org/291411@main> Reviewed commits have been landed. Closing PR #41687 and removing active labels. 2123565 3 kiet.ho 2025-06-13 12:53:59 -0700 Pull request: https://github.com/WebKit/WebKit/pull/46720 2124257 4 ews-feeder 2025-06-17 11:42:18 -0700 Committed 296329@main (94d77d86125d): <https://commits.webkit.org/296329@main> Reviewed commits have been landed. Closing PR #46720 and removing active labels.