[Webkit-unassigned] [Bug 26438] New: Scrollbar not in sync with scrolltop

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=26438

           Summary: Scrollbar not in sync with scrolltop
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
               URL: http://dev.vaadin.com/raw-
                    attachment/ticket/3039/safariscrollbug2.html
        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: matti.tahvonen at utu.fi


If a scrolled elements overflow is set to "hidden" and then back to "auto" with
javascript, the reappearing scrollbars are not in sync with the actual
scrolltop value.

Test case is in the url field.

The use case may seem to be quite rare, but it pops up easily when building a
workaround for #21462.

I found the bug when resolving issue found in Vaadin just two weeks ago
(http://dev.vaadin.com/ticket/3039).  I'm not 100% sure, but I suspect this to
be a regression, since we have not found this earlier with Vaadin(IT Mill
Toolkit previously).


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