[Webkit-unassigned] [Bug 9935] New: REGRESSION: Scroll bars not redrawn when using back/forward cache

[bugzilla-daemon at opendarwin.org]

http://bugzilla.opendarwin.org/show_bug.cgi?id=9935

           Summary: REGRESSION: Scroll bars not redrawn when using
                    back/forward cache
           Product: WebKit
           Version: 420+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Keywords: NeedsReduction, Regression, NeedsRadar
          Severity: normal
          Priority: P1
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at opendarwin.org
        ReportedBy: ddkilzer at kilzer.net
                CC: darin at apple.com, opendarwin.org at mitzpettel.com


Steps to reproduce:

1. Open Bug 9934: http://bugzilla.opendarwin.org/show_bug.cgi?id=9934
2. Resize window to make sure it scrolls both horizontally and vertically.
3. Click the first attachment in the bug (currently named "Test case").
4. Click the browser Back button.

Expected results:

The horizontal and vertical scroll bars should be (re) drawn on the bug page.

Actual results:

Neither the horizontal nor the vertical scroll bars are drawn.

Regression:

In production Safari 2.0.4 (419.3) with WebKit 418.8 on Mac OS X 10.4.7
(8J135/PowerPC), only the vertical scroll bar is redrawn; the horizontal scroll
bar is not.  (I also noticed that the vertical scroll bar isn't quite the
correct length, since its height changed as soon as I started to scroll down
with the mighty mouse scroll wheel.)

Notes:

Tested with locally-built WebKit r15456 with the Safari and Mac OS X versions
above.


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