[Webkit-unassigned] [Bug 249278] New: Don't paint empty scrollbar parts

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=249278

            Bug ID: 249278
           Summary: Don't paint empty scrollbar parts
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Scrolling
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ahmad.saleem792 at gmail.com
                CC: simon.fraser at apple.com

Hi Team,

This might be partial merge of following Blink commit:

Blink Commit - https://chromium.googlesource.com/chromium/blink/+/8991628a5345bdc95e6063aac05a3d71a43ca173

I have seen at least two cases (during triaging old bugs), where we paint black bar in place of scrollbar and when we resize then we get scrollbar or the area (black) get removed.

Webkit GitHub Source - https://github.com/WebKit/WebKit/blob/403e78eb6ddb81c1319cca7045b09199474573ed/Source/WebCore/rendering/RenderLayerScrollableArea.cpp#L1476 & https://github.com/WebKit/WebKit/blob/403e78eb6ddb81c1319cca7045b09199474573ed/Source/WebCore/rendering/RenderLayerScrollableArea.cpp#L1421

Just wanted to raise this bug and get input. It does not have any dedicated test case.

If without test, it is OK to merge then I am happy to do PR.

Thanks!

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20221214/acccf373/attachment.htm>