NEW250390
Fix scrollbar removal logic in FrameView::computeScrollbarExistence 
https://bugs.webkit.org/show_bug.cgi?id=250390
Summary Fix scrollbar removal logic in FrameView::computeScrollbarExistence
Ahmad Saleem
Reported 2023-01-10 08:56:28 PST
Hi Team, While going through Blink's commit, I came across another failing test case: Test Case (from Chrome Monorail) - https://jsfiddle.net/m6aLLhur/ ^ Try to select "scrollbar" and make it drag and the thumb / scrollbar will jump to bottom (in Safari 16.2) while in Chrome Canary 111 - you can control it. Blink Commit - https://src.chromium.org/viewvc/blink?view=revision&revision=185555 WebKit Source - https://searchfox.org/wubkat/source/Source/WebKitLegacy/mac/WebView/WebDynamicScrollBarsView.mm#357 Just wanted to raise so we can also fix this bug. Thanks!
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Radar WebKit Bug Importer
Comment 2 2023-01-17 08:57:16 PST
<rdar://problem/104335690>
Ahmad Saleem
Comment 3 2023-02-04 17:32:54 PST
(In reply to Ahmad Saleem from comment #0) > Hi Team, > > While going through Blink's commit, I came across another failing test case: > > Test Case (from Chrome Monorail) - https://jsfiddle.net/m6aLLhur/ > > ^ Try to select "scrollbar" and make it drag and the thumb / scrollbar will > jump to bottom (in Safari 16.2) while in Chrome Canary 111 - you can control > it. > > Blink Commit - > https://src.chromium.org/viewvc/blink?view=revision&revision=185555 > > WebKit Source - > https://searchfox.org/wubkat/source/Source/WebKitLegacy/mac/WebView/ > WebDynamicScrollBarsView.mm#357 > > Just wanted to raise so we can also fix this bug. > > Thanks! It seems to be here: https://searchfox.org/wubkat/source/Source/WebCore/platform/ScrollView.cpp#670 I removed this on local test branch but the scrollbar jumping on the bottom issue still persist. It could be there is some pre-requisite etc. Thanks!
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