[Webkit-unassigned] [Bug 83309] New: [GTK] Scrolling some iframes that are partially out of the viewport leads to repaint errors

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=83309

           Summary: [GTK] Scrolling some iframes that are partially out of
                    the viewport leads to repaint errors
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mrobinson at webkit.org


To reproduce:

1. Embed an iframe which has scrollable content with a non-white background color.
2. Scroll the iframe partially out of the viewport.
3. Scroll the iframe itself.

This leads to scrolling errors like those shown in the attached screenshot.

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