[Webkit-unassigned] [Bug 108556] New: Constrain layers for fixed position elements to the viewport

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=108556

           Summary: Constrain layers for fixed position elements to the
                    viewport
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
               URL: http://www.redfin.com/CA/Mountain-View/1075-Space-Park
                    -Way-94043/unit-297/home/21854852
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: simon.fraser at apple.com
                CC: bdakin at apple.com


Some sites (like redfin.com) have fixedpos elements which abspos children that are way outside the viewport. We currently end up making, and painting big tiled layers for this, which is crazy. We should constrain those layer sizes to the viewport size.

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