Bug 228002

Summary: transitions/transition-end-event-nested.html is a flaky failure
Product: WebKit Reporter: Eric Hutchison <ehutchison>
Component: AnimationsAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: dino, ehutchison, graouts, Jenner, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Test List
none
Update Test Expectations ews-feeder: commit-queue-

Description Eric Hutchison 2021-07-15 13:03:54 PDT
Created attachment 433616 [details]
Test List

transitions/transition-end-event-nested.html

is a flaky failure.

History: https://results.webkit.org/?suite=layout-tests&test=transitions%2Ftransition-end-event-nested.html&platform=ios&platform=mac

Diff: --- /Volumes/Data/worker/bigsur-debug-applesilicon-tests-wk2/build/layout-test-results/transitions/transition-end-event-nested-expected.txt
+++ /Volumes/Data/worker/bigsur-debug-applesilicon-tests-wk2/build/layout-test-results/transitions/transition-end-event-nested-actual.txt
@@ -2,5 +2,7 @@
 
 PASS --- [Expected] Property: background-color Target: box2 Elapsed Time: 0.2
 PASS --- [Expected] Property: left Target: box1 Elapsed Time: 0.2
-PASS --- [Expected] Property: width Target: box3 Elapsed Time: 0.3
 
+FAIL - Missing events
+[Missing] Property: width Target: box3 Elapsed Time: 0.3
+

Unable to reproduce issue using attached test list with run-webkit-tests -f -1 --iterations 5 --debug --test-list= on r279863 along with r279910 and r279945 with the -1 flag. 

Issue is occurring primarily on arm64 debug although there are instances of it on x86 and release versions.
Comment 1 Eric Hutchison 2021-07-15 13:10:16 PDT
Created attachment 433618 [details]
Update Test Expectations
Comment 2 Radar WebKit Bug Importer 2021-07-15 13:11:20 PDT
<rdar://problem/80647736>
Comment 3 Robert Jenner 2021-07-15 13:16:03 PDT
Comment on attachment 433618 [details]
Update Test Expectations

Clearing flags on attachment: 433618

Committed r279957 (239700@main): <https://commits.webkit.org/239700@main>