Bug 312842

Summary:	[ macOS iOS arm64 ]imported/w3c/web-platform-tests/css/css-flexbox/justify-content-00x.htm are constant image diffs
Product:	WebKit	Reporter:	Diego De La Toba <d_delatoba>
Component:	New Bugs	Assignee:	Nobody <webkit-unassigned>
Status:	NEW
Severity:	Normal	CC:	webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Diego De La Toba

Reported 2026-04-20 17:59:00 PDT

imported/w3c/web-platform-tests/css/css-flexbox/justify-content-001.htm imported/w3c/web-platform-tests/css/css-flexbox/justify-content-002.htm imported/w3c/web-platform-tests/css/css-flexbox/justify-content-004.htm imported/w3c/web-platform-tests/css/css-flexbox/justify-content-005.htm are constant image diffs on macOS arm64 and iOS HISTORY: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-flexbox%2Fjustify-content-005.htm&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-flexbox%2Fjustify-content-004.htm&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-flexbox%2Fjustify-content-002.htm&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-flexbox%2Fjustify-content-001.htm DIFF: https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/311621@main%20(3392)/imported/w3c/web-platform-tests/css/css-flexbox/justify-content-001-diffs.html https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/311621@main%20(3392)/imported/w3c/web-platform-tests/css/css-flexbox/justify-content-002-diffs.html https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/311621@main%20(3392)/imported/w3c/web-platform-tests/css/css-flexbox/justify-content-004-diffs.html https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/311621@main%20(3392)/imported/w3c/web-platform-tests/css/css-flexbox/justify-content-005-diffs.html IMAGES: See attached. BUILD URL: https://build.webkit.org/#/builders/1716/builds/3392 REPRODUCTION: I was not able to reproduce this on macOS or iOS - looks like this only fails on bots. I will mark expectations as fail while this pends investigation.

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Radar WebKit Bug Importer

Comment 1 2026-04-20 17:59:07 PDT

<rdar://problem/175208619>

Diego De La Toba

Comment 2 2026-04-20 18:09:19 PDT

Test gardening pull request: https://github.com/WebKit/WebKit/pull/63187

EWS

Comment 3 2026-04-20 18:11:10 PDT

Test gardening commit 311635@main (ea24d74130c7): <https://commits.webkit.org/311635@main> Reviewed commits have been landed. Closing PR #63187 and removing active labels.

Sammy Gill

Comment 4 2026-04-23 12:15:04 PDT

<rdar://problem/175431146>

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