[Webkit-unassigned] [Bug 287974] New: [ macOS Sonoma wk2 Release on Mac 14,12 with arm64 ] imported/w3c/web-platform-tests/css/css-view-transitions/massive-element-below-viewport-offscreen-old.html is a flaky failure. (failure in EWS)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=287974

            Bug ID: 287974
           Summary: [ macOS Sonoma wk2 Release on Mac 14,12 with arm64 ]
                    imported/w3c/web-platform-tests/css/css-view-transitio
                    ns/massive-element-below-viewport-offscreen-old.html
                    is a flaky failure. (failure in EWS)
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: y_karimi at apple.com
                CC: koivisto at iki.fi,
                    webkit-bot-watchers-bugzilla at group.apple.com,
                    webkit-bug-importer at group.apple.com

Created attachment 474288

  --> https://bugs.webkit.org/attachment.cgi?id=474288&action=review

imported/w3c/web-platform-tests/css/css-view-transitions/massive-element-below-viewport-offscreen-old.html

imported/w3c/web-platform-tests/css/css-view-transitions/massive-element-below-viewport-offscreen-old.html

This test is a flaky image failure on macOS Sonoma wk2 Release on Mac 14,12 with arm64 (pre-existing failure in EWS).

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-view-transitions%2Fmassive-element-below-viewport-offscreen-old.html

IMAGE DIFF:

Attached

DIFF URL:

https://build.webkit.org/results/Apple-Sonoma-Release-AppleSilicon-WK2-Tests/290284@main%20(7102)/imported/w3c/web-platform-tests/css/css-view-transitions/massive-element-below-viewport-offscreen-old-diffs.html

REPRODUCIBILITY:

I was able to reproduce this failure on MacOS Sequoia 15.2 (24C101 / arm64) at ToT with the following command:

run-webkit-tests imported/w3c/web-platform-tests/css/css-view-transitions/massive-element-below-viewport-offscreen-old.html --child-processes 1 --release --iterations 300

TEST RESULTS:

https://ews-build-dev.s3-us-west-2.amazonaws.com/macOS-Sonoma-Release-WK2-Intel-Tests-EWS/034f125a-209/results.html

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