[Webkit-unassigned] [Bug 40142] New: Repaint failure due to optimization in r52839

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=40142

           Summary: Repaint failure due to optimization in r52839
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: cory at phanfare.com


Created an attachment (id=57817)
 --> (https://bugs.webkit.org/attachment.cgi?id=57817)
Correct vs Incorrect painting.

We noticed IMGs in our web software were not repainting correctly in Chrome 5, but worked in Safari 4.0.4. We narrowed it down to revision 52839. I'm having trouble reducing it down, but I'm still working on it. Attached is a screen shot showing what it looks like before and after revision 52839.

I created a small video clip to demonstrate at http://albums.phanfare.com/isolated/F5944fka/1/4697732 
You will notice that if I click on an "album" the thumbnail grid is redrawn, but the images at the end of the row do repaint in their entirty. As soon as they are interacted with, the missing portions snap in.

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