[Webkit-unassigned] [Bug 6769] New: REGRESSION: Incomplete repaint when a cell's extra bottom margin grows

[bugzilla-daemon at opendarwin.org]

http://bugzilla.opendarwin.org/show_bug.cgi?id=6769

           Summary: REGRESSION: Incomplete repaint when a cell's extra
                    bottom margin grows
           Product: WebKit
           Version: 420+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Keywords: HasReduction, Regression
          Severity: normal
          Priority: P1
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at opendarwin.org
        ReportedBy: opendarwin.org at mitzpettel.com


In attachment 5911, when you click Grow, there's an area that doesn't repaint,
leaving behind a blue line. Switch to another tab to force repaint.

The Grow button eventually changes the cell's extra bottom, but when it
repaints (during layout), it still has its old, smaller extra bottom, so it
doesn't repaint any of the new area it will occupy. Most of that area is new to
the table, so it gets painted by the table, but the blue area was already in
the table and hence isn't repainted.

I'm going to attach another testcase, which is not a regression, where the
table doesn't grow, and therefore nothing gets repainted.


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