Bug 306557

Summary:

REGRESSION(306415@main): [Tahoe arm] fast/css-grid-layout/grid-painting-item-overflow.html is a flaky image failure.

Product:

WebKit

Reporter:

Diego De La Toba <d_delatoba>

Component:

New Bugs

Assignee:

Nobody <webkit-unassigned>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

webkit-bot-watchers-bugzilla, webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

Bug Depends on:

Bug Blocks:

Attachments:

Description	Flags
Image Diff	none

Diego De La Toba

Reported 2026-01-29 11:20:59 PST

fast/multicol/newmulticol/remove-spanner1.html is a flakey image failure only on Tahoe MacOS arm. Regression is at 306415@main, verified via bisection. HISTORY: https://results.webkit.org/?suite=layout-tests&test=fast%2Fcss-grid-layout%2Fgrid-painting-item-overflow.html IMAGE URL: https://build.webkit.org/results/Apple-Tahoe-Release-AppleSilicon-WK2-Tests/306415@main%20(1335)/fast/css-grid-layout/grid-painting-item-overflow-diffs.html IMAGES: See attached. STEPS TO REPRODUCE: I was able to reproduce this failure at macOS Tahoe ToT running the test as follows: run-webkit-tests --release --no-retry --force --iterations 2000 fast/multicol/newmulticol/remove-spanner1.html I am going to mark expectations as pass fail while this pends investigation.

Attachments
Image Diff (29.98 KB, application/zip) 2026-01-29 11:27 PST, Diego De La Toba	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Radar WebKit Bug Importer

Comment 1 2026-01-29 11:21:07 PST

Diego De La Toba

Comment 2 2026-01-29 11:27:32 PST

Diego De La Toba

Comment 3 2026-01-29 11:48:05 PST

EWS

Comment 4 2026-01-29 13:36:52 PST

Committed 306442@main (fcc48d035966): <https://commits.webkit.org/306442@main> Reviewed commits have been landed. Closing PR #57500 and removing active labels.

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