[Webkit-unassigned] [Bug 96825] New: Flashing scrollbars appear within containers hidden by elements with a higher z-index

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=96825

           Summary: Flashing scrollbars appear within containers hidden by
                    elements with a higher z-index
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.7
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: joshua.rubenoff at wellogic.com


Created an attachment (id=164226)
 --> (https://bugs.webkit.org/attachment.cgi?id=164226&action=review)
Demonstration of bug

When the user:

a) has a touch-based Mac input device (such as the Magic Mouse or Magic Trackpad), and
b) the "Show scrollbars:" option within System Preferences --> General is NOT set to "Always"...

The scrollbars within an overlapped element "flash". An example can be seen within the attached bug.html.

This is undesired behavior if a web author wants to display an overlay upon initial page load which overlaps scrollable page content. (Example: the overlay when first visiting iCloud.com.)

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