[Webkit-unassigned] [Bug 57057] New: Overlay scrollbars in overflow areas paint behind positive z-index content

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=57057

           Summary: Overlay scrollbars in overflow areas paint behind
                    positive z-index content
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: HasReduction, InRadar
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bdakin at apple.com


Overlay scrollbars in overflow areas paint behind any content that is painted after the background phase. Other styles of scrollbars avoid this problem because they clip content. Overlay scrollbars, however, allow content to lay out underneath the scrollbar region, so there is no clipping, and the scrollbars end up behind a lot of content.

<rdar://problem/9070500>

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