Bug 225830

Summary: [ iOS14-Simulator ] wk2imported/w3c/web-platform-tests/css/css-will-change/will-change-transform-huge-offset-scrolled.html is a flaky ImageOnlyFailure
Product: WebKit Reporter: Robert Jenner <jenner>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: ntim, webkit-bot-watchers-bugzilla, webkit-bug-importer, youennf
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Image Diffs for flaky failure none

Robert Jenner
Reported 2021-05-14 15:17:25 PDT
imported/w3c/web-platform-tests/css/css-will-change/will-change-transform-huge-offset-scrolled.html is a flaky imageonlyfailure on iOS 14-Simulator wk2. HISTORY: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-will-change%2Fwill-change-transform-huge-offset-scrolled.html DIFF IMAGE LINK: https://build.webkit.org/results/Apple-iOS-14-Simulator-Release-WK2-Tests/r277496%20(1457)/imported/w3c/web-platform-tests/css/css-will-change/will-change-transform-huge-offset-scrolled-diffs.html Images attached below.
Attachments
Image Diffs for flaky failure (5.20 KB, application/zip)
2021-05-14 15:18 PDT, Robert Jenner 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Robert Jenner
Comment 1 2021-05-14 15:18:15 PDT
Created attachment 428671 [details] Image Diffs for flaky failure Attaching image diffs from flaky failing test.
Robert Jenner
Comment 2 2021-05-14 15:18:57 PDT
The test is also causing a slow down on EWS here: https://ews-build.webkit.org/#/builders/51
Robert Jenner
Comment 3 2021-05-14 15:22:04 PDT
It appears the tests were re-imported at r277081: https://trac.webkit.org/changeset/277081/webkit
Robert Jenner
Comment 4 2021-05-14 15:27:18 PDT
It also appears that this has been flaky failing since the test was re-imported. I have updated the expectations to Pass ImageOnlyFailure here since it was causing a slow-down for EWS: https://trac.webkit.org/changeset/277511/webkit
Robert Jenner
Comment 5 2021-05-14 15:37:10 PDT
I was able to reproduce the failure at iOS-14-Simulator Production ToT using the following test: run-webkit-tests --ios-simulator imported/w3c/web-platform-tests/css/css-will-change/will-change-transform-huge-offset-scrolled.html --iterations 100 -f
Radar WebKit Bug Importer
Comment 6 2021-05-14 15:38:07 PDT
<rdar://problem/78035845>
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