Bug 269492 – REGRESSION (263724@main): fast/dynamic/anchor-lock.html is a flaky failure on iOS

• Status: REOPENED
• Component: Scrolling

[Dawn Morningstar]

fast/dynamic/anchor-lock.html
is a flaky failure on iOS queues. Scrolling back does not reveal a regression point, it looks as though it was flaky as soon as we started testing on iOS17.

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fdynamic%2Fanchor-lock.html 

DIFF:
--- /Volumes/Data/worker/Apple-iOS-17-Simulator-Release-WK2-Tests/build/layout-test-results/fast/dynamic/anchor-lock-expected.txt
+++ /Volumes/Data/worker/Apple-iOS-17-Simulator-Release-WK2-Tests/build/layout-test-results/fast/dynamic/anchor-lock-actual.txt
@@ -36,4 +36,3 @@
       RenderBlock (anonymous) at (0,2095) size 784x21
         RenderText {#text} at (0,0) size 60x19
           text run at (0,0) width 60: "#anchor1"
-scrolled to 0,987

DIFF-URL:
https://build.webkit.org/results/Apple-iOS-17-Simulator-Release-WK2-Tests/274726@main%20(2095)/fast/dynamic/anchor-lock-diff.txt

Test-Run:
https://build.webkit.org/#/builders/925/builds/2095

[Radar WebKit Bug Importer]

<rdar://problem/123028585>

[Dawn Morningstar]

Starting on Ryosuke for some insight for this one

[Alexey Proskuryakov]

With https://results.webkit.org/?suite=layout-tests&test=fast%2Fdynamic%2Fanchor-lock.html&platform=ios&recent=False, it's very clear that this regressed with 263724@main indeed.

[Ryosuke Niwa]

Pull request: https://github.com/WebKit/WebKit/pull/26542

[EWS]

Committed 276765@main (3cf82e28e0c8): <https://commits.webkit.org/276765@main>

Reviewed commits have been landed. Closing PR #26542 and removing active labels.

[Ryosuke Niwa]

This looks indeed fixed now.

[Ryosuke Niwa]

Hm... not quite. It's still flaky :(