[Webkit-unassigned] [Bug 111734] New: Stacking order of floating divs is incorrect in LayoutTests/fast/overflow/overflow-float-stacking.html with accelerated scrolling enabled

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=111734

           Summary: Stacking order of floating divs is incorrect in
                    LayoutTests/fast/overflow/overflow-float-stacking.html
                    with accelerated scrolling enabled
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jchaffraix at webkit.org
                CC: simon.fraser at apple.com, vollick at chromium.org
        Depends on: 93754


If you enable accelerated scrolling and try LayoutTests/fast/overflow/overflow-float-stacking.html, the stacking order of the divs will be inverted to the expected result.

This is similar to bug 93754 and is a core issue with self-painting layers: as they are painted in a separate phase after the non-self-painting objects, they yield to painting inversions.

Note: Until the fix for bug 93754 lands, you can't reproduce this but I confirm that this bug exists after applying the fix and manually testing.

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