Bug 295653

Summary: [ iOS ] css3/filters/backdrop-filter-page-scale.html is a flakey image failure
Product: WebKit Reporter: Bryan Medina <bmedina2>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: bfulgham, simon.fraser, webkit-bot-watchers-bugzilla, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Image diffs for flakey image test none

Bryan Medina
Reported 2025-07-09 13:20:26 PDT
css3/filters/backdrop-filter-page-scale.html is a flakey image failure occurring on iOS HISTORY: https://results.webkit.org/?suite=layout-tests&test=css3%2Ffilters%2Fbackdrop-filter-page-scale.html DIFF URL: https://build.webkit.org/results/Apple-iPadOS-18-Simulator-Release-WK2-Tests/297158@main%20(1434)/css3/filters/backdrop-filter-page-scale-diffs.html Image diffs will be attached to bug, it appears to be off by 7.3%, text stating 'Hello' and a black box is supposed to show up on screen, but it does not.
Attachments
Image diffs for flakey image test (10.15 KB, application/zip)
2025-07-09 13:21 PDT, Bryan Medina 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Bryan Medina
Comment 1 2025-07-09 13:21:05 PDT
Created attachment 475827 [details] Image diffs for flakey image test
Radar WebKit Bug Importer
Comment 2 2025-07-09 13:21:26 PDT
<rdar://problem/155459427>
Bryan Medina
Comment 3 2025-07-09 13:28:47 PDT
I was able to reproduce this failure on iOS 18 Simulator ToT running the test as follows: run-webkit-tests css3/filters/backdrop-filter-page-scale.html --iterations=3
Bryan Medina
Comment 4 2025-07-09 13:45:41 PDT
Pull request: https://github.com/WebKit/WebKit/pull/47781
EWS
Comment 5 2025-07-09 13:49:17 PDT
Test gardening commit 297182@main (5c53f9f33ead): <https://commits.webkit.org/297182@main> Reviewed commits have been landed. Closing PR #47781 and removing active labels.
Alexey Proskuryakov
Comment 6 2025-07-10 14:04:11 PDT
The "actual" image is all white.
EWS
Comment 7 2025-07-10 16:28:11 PDT
Test gardening commit 297229@main (94bfeb7ac667): <https://commits.webkit.org/297229@main> Reviewed commits have been landed. Closing PR #47860 and removing active labels.
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