[Webkit-unassigned] [Bug 121137] New: REGRESSION (143483): overflow:hidden doesn't quash big repaints from text-indent: -9999px

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=121137

           Summary: REGRESSION (143483): overflow:hidden doesn't quash big
                    repaints from text-indent: -9999px
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        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: robert at webkit.org, rniwa at webkit.org


Load the attachment in Minibrowser (WK1), launch QuartzDebug, and turn on "Flash screen updates". Now hover over the gradient bit. Note how the repaint extents outside the left of the box.

The box has overflow:hidden, so why is the repaint so big?

This kills our advice to combine text-indent: -9999px with overflow:hidden

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