Bug 187388 - REGRESSION: [iOS] Layout Test animations/needs-layout.html is a flaky image failure
Summary: REGRESSION: [iOS] Layout Test animations/needs-layout.html is a flaky image f...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Animations (show other bugs)
Version: Other
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-07-06 09:12 PDT by Ryan Haddad
Modified: 2018-07-10 17:23 PDT (History)
5 users (show)

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Description Ryan Haddad 2018-07-06 09:12:26 PDT 
The following layout test is flaky on iOS (and historically on macOS Debug)

animations/needs-layout.html

Probable cause:

Unknown, this recently started failing frequently on iOS.

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=animations%2Fneeds-layout.html
Comment 1 Ryan Haddad 2018-07-06 09:13:59 PDT 
The test expects a green square, but the actual output shows a red rectangle beneath the bottom edge of the green square:
https://build.webkit.org/results/Apple%20iOS%2011%20Simulator%20Debug%20WK2%20(Tests)/r233576%20(5250)/animations/needs-layout-diffs.html
Comment 2 Ryan Haddad 2018-07-06 09:15:33 PDT 
There were a few animations related changes around the time the flakiness started:
https://trac.webkit.org/log/webkit/?action=stop_on_copy&mode=stop_on_copy&rev=233462&stop_rev=233458&limit=100&verbose=on
Comment 3 Ryan Haddad 2018-07-09 10:28:55 PDT 
Marked test as flaky in https://trac.webkit.org/r233643