Bug 219498

Summary:	[macOS WK1] imported/w3c/web-platform-tests/css/css-scroll-snap/scroll-target-padding-003.html is a flaky failure
Product:	WebKit	Reporter:	Ryan Haddad <ryanhaddad>
Component:	New Bugs	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	mrobinson, 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=219073

Description Ryan Haddad 2020-12-03 10:44:29 PST

imported/w3c/web-platform-tests/css/css-scroll-snap/scroll-target-padding-003.html is a flaky failure on macOS WK1 bots.

Link to image diff showing the test is displaying a red stripe instead of the expected green one:
https://build.webkit.org/results/Apple-Catalina-Debug-WK1-Tests/r270393%20(8621)/imported/w3c/web-platform-tests/css/css-scroll-snap/scroll-target-padding-003-diffs.html

https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-scroll-snap%2Fscroll-target-padding-003.html&flavor=wk1

Comment 1 Ryan Haddad 2020-12-03 10:46:24 PST

This test was consistently failing until it was marked as passing as part of https://trac.webkit.org/changeset/270023/webkit. At that point, it became a flaky failure for both WK1 and WK2. 

The flakes on WK2 appear to have stopped around https://trac.webkit.org/changeset/270292/webkit, but the test is still flaky on WK1 bots, slowing down EWS.

Comment 2 Radar WebKit Bug Importer 2020-12-03 10:46:35 PST

<rdar://problem/71943477>

Comment 3 Ryan Haddad 2020-12-03 11:01:40 PST

Marked test as flaky for macOS WK1 in r270397

Comment 4 Simon Fraser (smfr) 2020-12-03 12:03:46 PST

Martin could you take a look?