Bug 230327

Summary: [iOS EWS & Mac] imported/w3c/web-platform-tests/css/css-transforms/crashtests/transform-marquee-resize-div-image-001.html is a flaky failure
Product: WebKit Reporter: Eric Hutchison <ehutchison>
Component: CSSAssignee: Eric Hutchison <ehutchison>
Status: REOPENED ---    
Severity: Normal CC: ayumi_kojima, ehutchison, koivisto, 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=231816

Description Eric Hutchison 2021-09-15 17:01:13 PDT
imported/w3c/web-platform-tests/css/css-transforms/crashtests/transform-marquee-resize-div-image-001.html

is a flaky failure on Catalina Release.

History: https://results.webkit.org/?suite=layout-tests&test=imported/w3c/web-platform-tests/css/css-transforms/crashtests/transform-marquee-resize-div-image-001.html

Results: https://build.webkit.org/results/Apple-Catalina-Release-WK1-Tests/r282478%20(5523)/results.html

Diff: 
--- /Volumes/Data/worker/catalina-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/css/css-transforms/crashtests/transform-marquee-resize-div-image-001-expected.txt
+++ /Volumes/Data/worker/catalina-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/css/css-transforms/crashtests/transform-marquee-resize-div-image-001-actual.txt
@@ -4,7 +4,7 @@
   RenderBlock {HTML} at (0,0) size 800x44
 layer at (8,8) size 784x28
   RenderBody {BODY} at (8,8) size 784x28
-layer at (8,8) size 784x24 scrollX -769
+layer at (8,8) size 784x24 scrollX -757
   RenderBlock {MARQUEE} at (0,0) size 784x24
     RenderBlock {DIV} at (0,0) size 20x24
       RenderImage {IMG} at (0,0) size 20x20
Comment 1 Radar WebKit Bug Importer 2021-09-15 17:03:55 PDT
<rdar://problem/83174441>
Comment 2 Eric Hutchison 2021-09-15 17:04:30 PDT
Rebaselined: https://trac.webkit.org/changeset/282481/webkit
Comment 3 Radar WebKit Bug Importer 2021-09-15 17:04:48 PDT
<rdar://problem/83174492>
Comment 4 Eric Hutchison 2021-09-16 09:32:44 PDT
Corrected rebaseline: https://trac.webkit.org/changeset/282557/webkit
Comment 5 Simon Fraser (smfr) 2021-09-16 09:59:16 PDT
I think this test actually needs to be marked flakey. It seems to have some timing or os-dependent scrolling going on.
Comment 6 Eric Hutchison 2021-09-16 14:56:43 PDT
(In reply to Simon Fraser (smfr) from comment #5)
> I think this test actually needs to be marked flakey. It seems to have some
> timing or os-dependent scrolling going on.

Done. Changed here: https://trac.webkit.org/changeset/282603/webkit. Thanks Simon.
Comment 7 Eric Hutchison 2021-09-17 10:27:25 PDT
Update expectations to include wk1: http://trac.webkit.org/changeset/282668/webkit
Comment 8 ayumi_kojima 2021-10-28 14:59:49 PDT
(In reply to Eric Hutchison from comment #7)
> Update expectations to include wk1:
> http://trac.webkit.org/changeset/282668/webkit

The test is also appearing on iOS-14-Simulator-WK2-Tests-EWS as a flaky failure. 

It started being flaky on iOS around October 13. Build: https://ews-build.webkit.org/#/builders/51/builds/23362

Reopen this bug as the flaky failure on both Catalina and iOS are still occurring.
Comment 9 ayumi_kojima 2021-10-28 15:00:00 PDT
*** Bug 231816 has been marked as a duplicate of this bug. ***