[Webkit-unassigned] [Bug 31054] New: position: relative; top: N px; miscalculates rect and therefor dirty rects when updated, though painting is in correct place

Tue Nov 3 05:04:16 PST 2009

https://bugs.webkit.org/show_bug.cgi?id=31054

           Summary: position: relative; top: N px; miscalculates rect and
                    therefor dirty rects when updated, though painting is
                    in correct place
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://www.mijnalbum.nl/?m=nettv
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: onne.gorter at avinity.net

Javascript updated content suffers because old rendering is not updated. Any
new (longer) rendering is showing correctly, see below for minimal test case,
and the attached screenshots of this testcase.

---- test.html:
<html>
    <body>
        <span id=span1 style="position: relative; top: 30px;">hello</span>
    </body>

    <script>
setTimeout(function() {
    document.getElementById("span1").innerHTML="BRRRRRRRRRRRRRRRRR";
}, 500);
    </script>
</html>

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