[Webkit-unassigned] [Bug 212983] New: REGRESSION (r261841): Scrolling on Spotify page gets reset to the top

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=212983

            Bug ID: 212983
           Summary: REGRESSION (r261841): Scrolling on Spotify page gets
                    reset to the top
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Load https://open.spotify.com/artist/6vWDO969PvNqNYHIOW5v0m and scroll down. Note that when new content gets added to the bottom, the scroll position is reset to the top.

What's happening is that the <div> with overflow:scroll is getting resized to some large, non-scrollable size for a while, triggering a reset of the scroll position via RenderBlock::endAndCommitUpdateScrollInfoAfterLayoutTransaction()/updateScrollInfoAfterLayout().

This doesn't happen prior to r261841. The page does hit the new code.

-- 
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/20200609/7eebd568/attachment.htm>