[Webkit-unassigned] [Bug 25216] New: Absolute positon div over iframe does not repaint correctly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=25216

           Summary: Absolute positon div over iframe does not repaint
                    correctly
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
               URL: http://www.vasinov.com/webkit/
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: tommasobuvoli at yahoo.com


I see this bug happen in the latest nightly build of webkit and all versions of
safari and chrome. When an absolutely positioned div is placed over an
absolutely positioned iframe, the div will not be painted properly and will
smear, or disappear depending on the direction of scrolling.

It happens mostly when the iframe is navigated from a page without a scrollbar
to a page with a scroll bar. In the example url i provided I start with an
iframe pointing to google. Once you search and the page navigates to the
results your scrollbar will appear, and scrolling will cause the div to hide or
smear.


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