Bug 234996

Summary: REGRESSION (r287431): [Big Sur WK1] fast/scrolling/latching/iframe-latch-small-deltas.html is consistently failing
Product: WebKit Reporter: Ryan Haddad <ryanhaddad>
Component: ScrollingAssignee: Simon Fraser (smfr) <simon.fraser>
Status: RESOLVED FIXED    
Severity: Normal CC: simon.fraser, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=234645
Attachments:
Description Flags
Patch ryanhaddad: review+

Description Ryan Haddad 2022-01-07 16:57:37 PST
fast/scrolling/latching/iframe-latch-small-deltas.html is consistently failing on Big Sur WK1 bots after r287431

--- /Volumes/Data/worker/bigsur-release-tests-wk1/build/layout-test-results/fast/scrolling/latching/iframe-latch-small-deltas-expected.txt
+++ /Volumes/Data/worker/bigsur-release-tests-wk1/build/layout-test-results/fast/scrolling/latching/iframe-latch-small-deltas-actual.txt
@@ -7,12 +7,12 @@
 PASS iframeTarget.contentWindow.pageYOffset is 0
 PASS window.pageYOffset is 200
 After scroll
-PASS iframeTarget.contentWindow.pageYOffset is 410
+FAIL iframeTarget.contentWindow.pageYOffset should be 410. Was 205.
 PASS window.pageYOffset is 200
 After wait
-PASS iframeTarget.contentWindow.pageYOffset is 410
+FAIL iframeTarget.contentWindow.pageYOffset should be 410. Was 205.
 PASS window.pageYOffset is 200
-PASS iframeTarget.contentWindow.pageYOffset is 400
+FAIL iframeTarget.contentWindow.pageYOffset should be 400. Was 200.
 PASS window.pageYOffset is 200
 PASS successfullyParsed is true
 
https://build.webkit.org/results/Apple-BigSur-Release-WK1-Tests/r287783%20(7695)/results.html

https://results.webkit.org/?suite=layout-tests&test=fast%2Fscrolling%2Flatching%2Fiframe-latch-small-deltas.html
Comment 1 Radar WebKit Bug Importer 2022-01-07 16:57:54 PST
<rdar://problem/87279223>
Comment 2 Simon Fraser (smfr) 2022-01-07 18:29:45 PST
Probably just needs a new baseline.
Comment 3 Simon Fraser (smfr) 2022-01-10 10:30:06 PST
Created attachment 448769 [details]
Patch
Comment 4 Ryan Haddad 2022-01-10 10:31:50 PST
Comment on attachment 448769 [details]
Patch

If the baseline is the same as Catalina, we can remove the copy in the mac-catalina-wk1 folder as part of this change. The Catalina bots will pick up this Big Sur version.
Comment 5 Simon Fraser (smfr) 2022-01-10 10:38:07 PST
https://trac.webkit.org/changeset/287843/webkit