[Webkit-unassigned] [Bug 15033] New: REGRESSION: Vertical scroll bar not redrawn properly when going back in history

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=15033

           Summary: REGRESSION: Vertical scroll bar not redrawn properly
                    when going back in history
           Product: WebKit
           Version: 522+ (nightly)
          Platform: Macintosh
               URL: http://lists.macosforge.org/pipermail/webkit-
                    unassigned/2007-August/date.html
        OS/Version: Mac OS X 10.4
            Status: NEW
          Keywords: Regression
          Severity: Normal
          Priority: P1
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ddkilzer at webkit.org


* SUMMARY
While navigating the webkit-unassigned mailing list
(http://lists.macosforge.org/pipermail/webkit-unassigned/2007-August/date.html),
there are times when I click on a message, then use Cmd-Left-Arrow to go back
that the vertical scroll bar is not redrawn properly.

* STEPS TO REPRODUCE
1. Launch Safari/WebKit.
2. Go to URL: 
http://lists.macosforge.org/pipermail/webkit-unassigned/2007-August/date.html
3. Scroll down the list to link
http://lists.macosforge.org/pipermail/webkit-unassigned/2007-August/046941.html
([Webkit-unassigned] [Bug 15017] ASSERTION FAILED: size == 0 || size >=
m_encodedSize in WebCore::CachedResource::setEncodedSize).
4. Click on it with the mouse.
5. Hit Cmd-Left-Arrow or browser back button to go back.

* EXPECTED RESULTS
Scroll bar should be redrawn for the longer results.

* ACTUAL RESULTS
Scroll bar is not redrawn, show a short and a long one (see screenshot to be
attached).

* REGRESSION
This is a regression from shipping Safari 2.0.4 (419.3) with original WebKit on
Mac OS X 10.4.10 (8R218).  Tested with a local debug build of WebKit r25168
with Safari 3 Public Beta v. 3.0.3 (522.12.1) on 10.4.10.


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