Bug 187491

Summary: [macOS] Layout Test fast/hidpi/filters-and-image-buffer-resolution.html is flaky
Product: WebKit Reporter: Ryan Haddad <ryanhaddad>
Component: New BugsAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: ap, dino, simon.fraser, tsavell, ysuzuki
Priority: P2    
Version: Other   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Mark test flaky none

Description Ryan Haddad 2018-07-09 16:28:28 PDT 
The following layout test is flaky on Sierra and High Sierra.

fast/hidpi/filters-and-image-buffer-resolution.html

Probable cause:

Unknown, this test has been flaky for a while. It fails more frequently on Debug queues.

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fhidpi%2Ffilters-and-image-buffer-resolution.html

Link to image diff, which shows that the top edge of a green square is unexpectedly blurred:
https://build.webkit.org/results/Apple%20High%20Sierra%20Debug%20WK2%20(Tests)/r233646%20(4031)/fast/hidpi/filters-and-image-buffer-resolution-diffs.html
Comment 1 Truitt Savell 2018-07-09 16:41:50 PDT 
Created attachment 344639 [details]
Mark test flaky
Comment 2 Ryan Haddad 2018-07-09 16:46:33 PDT 
Comment on attachment 344639 [details]
Mark test flaky

Clearing flags on attachment: 344639

Committed r233665: <https://trac.webkit.org/changeset/233665>