Bug 215641

Summary: Vertical scrolling gets stuck when a horizontal scroller is under the mouse (google search results)
Product: WebKit Reporter: Mehmet <mehmet.sahin>
Component: ScrollingAssignee: Simon Fraser (smfr) <simon.fraser>
Status: RESOLVED FIXED    
Severity: Normal CC: cmarcelo, ews-watchlist, fred.wang, jamesr, luiz, simon.fraser, thorton, tonikitoo, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: Safari Technology Preview   
Hardware: Mac   
OS: macOS 10.15   
Attachments:
Description Flags
Vertical scrolling lag
none
Patch
none
Patch
none
Patch thorton: review+

Mehmet
Reported 2020-08-18 23:33:53 PDT
Created attachment 406829 [details] Vertical scrolling lag Safari Technology Preview Release 112 (Safari 14.0, WebKit 15610.1.25.5.1) OS: macOS 10.15.6 Type: Regression Steps to reproduce: 1.) go to google.com 2.) search for "apple" 3.) scroll down until you see the video section, where you can scroll horizontally 4.) now move the mouse cursor over this box and try to scroll vertically up or down to the page Actual result: Vertical scrolling lags, because it wants to scroll also horizontally. Expected result: Vertical scrolling should not lag. This seems to be a regression in Safari Technology Preview 14. This is not a problem in Safari Stable Version 13.1.2 (15609.3.5.1.3). A screencast of the issue is attached. Thanks for fixing it in advance.
Attachments
Vertical scrolling lag (8.97 MB, video/quicktime)
2020-08-18 23:33 PDT, Mehmet 		no flags
Details
Patch (18.34 KB, patch)
2020-08-27 22:24 PDT, Simon Fraser (smfr) 		no flags
DetailsFormatted DiffDiff
Patch (20.29 KB, patch)
2020-08-27 23:38 PDT, Simon Fraser (smfr) 		no flags
DetailsFormatted DiffDiff
Patch (24.82 KB, patch)
2020-08-28 12:07 PDT, Simon Fraser (smfr) 		thorton: review+
DetailsFormatted DiffDiff
Show Obsolete (2) View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2020-08-19 15:23:06 PDT
<rdar://problem/67430532>
Simon Fraser (smfr)
Comment 2 2020-08-27 22:24:55 PDT
Created attachment 407451 [details] Patch
Simon Fraser (smfr)
Comment 3 2020-08-27 23:38:00 PDT
Created attachment 407452 [details] Patch
Simon Fraser (smfr)
Comment 4 2020-08-28 12:07:25 PDT
Created attachment 407494 [details] Patch
Simon Fraser (smfr)
Comment 5 2020-08-28 14:15:34 PDT
https://trac.webkit.org/r266292
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