NEW 209619
[ macOS iOS ] compositing/clipping/border-radius-async-overflow-stacking.html is flaky failing. 
https://bugs.webkit.org/show_bug.cgi?id=209619
Summary [ macOS iOS ] compositing/clipping/border-radius-async-overflow-stacking.html...
Jason Lawrence
Reported 2020-03-26 13:39:42 PDT
compositing/clipping/border-radius-async-overflow-stacking.html Description: This test is flaky failing on Catalina. The flaky failures are apparent throughout the visible history. History: https://results.webkit.org/?suite=layout-tests&test=compositing%2Fclipping%2Fborder-radius-async-overflow-stacking.html&platform=mac&version_name=Catalina&limit=50000 Diff: https://build.webkit.org/results/Apple-Catalina-Release-WK2-Tests/r259063%20(4109)/compositing/clipping/border-radius-async-overflow-stacking-diffs.html
Attachments
border-radius-async-overflow-stacking-diff (2.20 KB, image/png)
2020-03-26 13:46 PDT, Jason Lawrence 		no flags
Details
Diff Image 09/09/2020 (8.36 KB, image/png)
2020-09-09 17:22 PDT, Hector Lopez 		no flags
Details
Expected Image 09/09/2020 (60.92 KB, image/png)
2020-09-09 17:24 PDT, Hector Lopez 		no flags
Details
Actual Image 09/09/2020 (61.06 KB, image/png)
2020-09-09 17:24 PDT, Hector Lopez 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2020-03-26 13:40:05 PDT
<rdar://problem/60934034>
Jason Lawrence
Comment 2 2020-03-26 13:41:52 PDT
I am able to reproduce this issue with the following command. run-webkit-tests --iterations 2000 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --debug-rwt-logging --no-retry --force --no-build -f compositing/clipping/border-radius-async-overflow-stacking.html
Jason Lawrence
Comment 3 2020-03-26 13:46:24 PDT
Created attachment 394656 [details] border-radius-async-overflow-stacking-diff
Jason Lawrence
Comment 4 2020-03-26 13:49:13 PDT
I have marked this test as failing while this issue is investigated. https://trac.webkit.org/changeset/259075/webkit
Hector Lopez
Comment 5 2020-09-09 17:22:44 PDT
Created attachment 408386 [details] Diff Image 09/09/2020
Hector Lopez
Comment 6 2020-09-09 17:24:00 PDT
Created attachment 408387 [details] Expected Image 09/09/2020
Hector Lopez
Comment 7 2020-09-09 17:24:31 PDT
Created attachment 408388 [details] Actual Image 09/09/2020
Hector Lopez
Comment 8 2020-09-09 17:31:13 PDT
Test is very inconsistently flaky on macOS Catalina but now also flaky on BigSur+. Test is also flaky in iOS wk2. First occurrence of failure on iOS is at r262354 and on macOS Catalina from r262354. History: https://results.webkit.org/?suite=layout-tests&test=compositing%2Fclipping%2Fborder-radius-async-overflow-stacking.html&limit=50000&platform=ios&platform=mac Diff is different than before but not by much, difference now is 7 pixels. Please see attached. Will check if a re-baseline is in order. Test expectation changes: https://trac.webkit.org/changeset/266807/webkit
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