Bug 289115 – REGRESSION(290786@main): [ iOS ] 3 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/*.html are constant failures.

• Component: Scrolling
• Status: RESOLVED FIXED

[Yasmin Karimi]

Created attachment 474451 [details]
imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/two-animations-attach-to-same-scroll-timeline-cancel-one.html

The following 3 tests are failing on iOS:

imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/animation-with-transform.html
imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/two-animations-attach-to-same-scroll-timeline-cancel-one.html
imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/two-animations-attach-to-same-scroll-timeline.html

HISTORY:

https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fscroll-animations%2Fscroll-timelines%2Ftwo-animations-attach-to-same-scroll-timeline.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fscroll-animations%2Fscroll-timelines%2Ftwo-animations-attach-to-same-scroll-timeline-cancel-one.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fscroll-animations%2Fscroll-timelines%2Fanimation-with-transform.html

IMAGE DIFF:

Attached

DIFF URL:

https://build.webkit.org/results/Apple-iOS-18-Simulator-Release-WK2-Tests/291563@main%20(908)/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/two-animations-attach-to-same-scroll-timeline-cancel-one-diffs.html

REPRODUCIBILITY:

I was able to reproduce these issues on the iOS 18.2 simulator at ToT using the following command:

run-webkit-tests --ios-simulator --child-processes 2 -f imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/two-animations-attach-to-same-scroll-timeline.html --iterations 5

REGRESSION:

Contextual information indicates the probable regression point is 290786@main. The changed test expectations in this commit appear to be directly related to the observed regression test failures.

Regression range: 290784@main - 290791@main.

[Radar WebKit Bug Importer]

<rdar://problem/146142722>

[EWS]

Test gardening commit 291592@main (c5b2c0d4c87b): <https://commits.webkit.org/291592@main>

Reviewed commits have been landed. Closing PR #41880 and removing active labels.

[Antoine Quint]

For all three tests, the issue is that the scroll bar appears only in the actual image. So it seems to be pretty harmless. Would be nice to understand why and address it.

[Antoine Quint]

Pull request: https://github.com/WebKit/WebKit/pull/44611

[Antoine Quint]

Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/52212

[EWS]

Committed 294200@main (ef2110dcad8e): <https://commits.webkit.org/294200@main>

Reviewed commits have been landed. Closing PR #44611 and removing active labels.