Bug 223484

Summary: [ macOS ARM 64 ] compositing/style-change/backface-visibility-change.htmlis a flakey image failure
Product: WebKit Reporter: Robert Jenner <jenner>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: ap, 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 failing test none

Description Robert Jenner 2021-03-18 15:59:54 PDT 
compositing/style-change/backface-visibility-change.html

is a flakey image failure on macOS BigSur release and debug in wk1 and wk2 on Apple Silicon Macs only.

HISTORY URL:
https://results.webkit.org/?suite=layout-tests&test=compositing%2Fstyle-change%2Fbackface-visibility-change.html

Image diffs are attached to the bug.
Comment 1 Robert Jenner 2021-03-18 16:00:40 PDT 
Created attachment 423664 [details]
Image diffs for flakey failing test

Attaching image diffs for flakey image failing test.
Comment 2 Radar WebKit Bug Importer 2021-03-18 16:01:03 PDT 
<rdar://problem/75595215>
Comment 3 Robert Jenner 2021-03-18 16:10:58 PDT 
Test has been flakey Image failing since it started on Apple Silicon. Updated the test expectations to Pass ImageOnlyFailure here:

https://trac.webkit.org/changeset/274681/webkit

Failure is only occurring on Apple Silicon systems, and as such I cannot duplicate the failure because I do not have access to one.