[Webkit-unassigned] [Bug 271698] New: [Skia][GTK] Misplaced tiles when scrolling drakenhh.com

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=271698

            Bug ID: 271698
           Summary: [Skia][GTK] Misplaced tiles when scrolling
                    drakenhh.com
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aperez at igalia.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Created attachment 470603

  --> https://bugs.webkit.org/attachment.cgi?id=470603&action=review

Screenshot showing misplaced tiles

Steps to reproduce:

 1. Have a WebKitGTK build with USE_SKIA=ON (tested with 276677 at main)
 2. run-minibrowser --gtk https://drakenhh.com
 3. Scroll around the page. Typically scrolling all the way to the bottom
    and then backing up will trigger the issue, which is most noticeable
    over big images.
 4. Hovering elements that cause repaints/recomposition (like buttons)
    will “fix” the misplaced tiles, but if one keeps scrolling the issue
    resurfaces.

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