Bug 232865 - New test: [Mac-wk2] fast/scrolling/mac/wheel-event-deltas-are-not-filtered.html is a flaky failure
Summary: New test: [Mac-wk2] fast/scrolling/mac/wheel-event-deltas-are-not-filtered.ht...
Status: RESOLVED CONFIGURATION CHANGED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Scrolling (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2021-11-08 21:38 PST by Ryan Haddad
Modified: 2021-11-10 09:38 PST (History)
3 users (show)

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Description Ryan Haddad 2021-11-08 21:38:09 PST 
fast/scrolling/mac/wheel-event-deltas-are-not-filtered.html is a flaky failure on macOS WK2 bots. This is seen on Monterey, Big Sur, and Catalina.

--- /Volumes/Data/worker/bigsur-release-tests-wk2/build/layout-test-results/fast/scrolling/mac/wheel-event-deltas-are-not-filtered-expected.txt
+++ /Volumes/Data/worker/bigsur-release-tests-wk2/build/layout-test-results/fast/scrolling/mac/wheel-event-deltas-are-not-filtered-actual.txt
@@ -1,8 +1,7 @@
 -10 10
 -10 20
 -10 10
--10 20
--20 30
+-30 50
 PASS successfullyParsed is true
 
 TEST COMPLETE

https://results.webkit.org/?suite=layout-tests&test=fast%2Fscrolling%2Fmac%2Fwheel-event-deltas-are-not-filtered.html
Comment 1 Radar WebKit Bug Importer 2021-11-08 21:38:34 PST 
<rdar://problem/85188058>
Comment 2 Ryan Haddad 2021-11-08 21:42:16 PST 
I was able to reproduce locally with:
run-webkit-tests --debug --no-build fast/scrolling/mac/wheel-event-deltas-are-not-filtered.html --iterations 50 --exit-after-n-failures 1
Comment 3 Simon Fraser (smfr) 2021-11-08 21:53:54 PST 
This is about wheel event coalescing.
Comment 4 Simon Fraser (smfr) 2021-11-08 21:53:57 PST 
This is about wheel event coalescing.
Comment 5 Simon Fraser (smfr) 2021-11-08 21:54:53 PST 
Did I land the test with:
                    viewX : 101, // Defeat coalescing
??
Comment 6 Simon Fraser (smfr) 2021-11-09 07:48:30 PST 
Should be fixed by https://trac.webkit.org/changeset/285498/webkit
Comment 7 Alexey Proskuryakov 2021-11-10 09:38:10 PST 
The dashboard agrees.