Bug 259464

Summary:	[ Monterey+ WK2 ] fast/events/wheel/redispatched-wheel-event.html is a flaky failure
Product:	WebKit	Reporter:	Ben Schwartz <ben_schwartz>
Component:	Scrolling	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	charliew, nmouchtaris, simon.fraser, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=259458 https://bugs.webkit.org/show_bug.cgi?id=258741 https://bugs.webkit.org/show_bug.cgi?id=254927

Description Ben Schwartz 2023-07-24 18:21:59 PDT

fast/events/wheel/redispatched-wheel-event.html

This test is a flaky failure on macOS Monterey and above, WebKit 2.
The failures occur mostly on arm64; however, there are a few present on x86_64.

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=fast%2Fevents%2Fwheel%2Fredispatched-wheel-event.html&platform=mac

TEXT DIFF:

 PASS windowScrollEventCount is 0
 PASS overflowScrollEventCount is 0
 PASS windowScrollEventCount is 0
-PASS overflowScrollEventCount >= expectedMinOverflowScrollEventCount is true
+FAIL overflowScrollEventCount >= expectedMinOverflowScrollEventCount should be true. Was false.
 PASS successfullyParsed is true
 
 TEST COMPLETE

DIFF URL:

https://build.webkit.org/results/Apple-Monterey-Debug-AppleSilicon-WK2-Tests/266237@main%20(6312)/fast/events/wheel/redispatched-wheel-event-pretty-diff.html

Comment 1 Radar WebKit Bug Importer 2023-07-24 18:22:09 PDT

<rdar://problem/112806541>

Comment 2 Ben Schwartz 2023-07-24 18:45:06 PDT

I was unable to reproduce this bug using arm64 and WebKit 2 on macOS Ventura. There is a possibly related bug with this test, see #259458 (or rdar://112801240).

The first instance of this flaky failure is at 258520@main.

Comment 3 Ben Schwartz 2023-07-24 18:50:50 PDT

It appears there may be an issue with the test itself. There was an edit made at 262519@main which intended to stop some of the flaky failures, but the issues persist.

Comment 4 Ben Schwartz 2023-07-24 19:01:06 PDT

Pull request: https://github.com/WebKit/WebKit/pull/16056

Comment 5 EWS 2023-07-25 08:52:21 PDT

Test gardening commit 266292@main (456231130b38): <https://commits.webkit.org/266292@main>

Reviewed commits have been landed. Closing PR #16056 and removing active labels.

Comment 6 Ben Schwartz 2023-07-25 09:39:53 PDT

I have marked this test as a consistent failure while this issue is investigated. https://commits.webkit.org/266292@main