[Webkit-unassigned] [Bug 46727] New: mixup rendering of two tables (one floating) with z-index: auto on wikipedia

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=46727

           Summary: mixup rendering of two tables (one floating) with
                    z-index: auto on wikipedia
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
               URL: http://en.wikipedia.org/wiki/BlackBerry_OS
        OS/Version: Mac OS X 10.6
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: j.gonggrijp at gmail.com


Created an attachment (id=69055)
 --> (https://bugs.webkit.org/attachment.cgi?id=69055)
Screenshot of table overlay rendering bug

Using nightly build of version 534.10+ (not available in the "Version" field of the form), revision 68419.

Wikipedia pages (such as the one referenced) sometimes contain a floating "infobox" on the right side of the page, as well as a "sortable table" for displaying factual data. Both are implemented in HTML as table elements.

If the height of the floating infobox is larger than the distance between the top of the "sortable table" and the top of the content text, the "sortable table" is not pushed to the bottom, as would be expected. Instead, the background of the "sortable table" is hidden behind the background of the floating infobox, while the text of the "sortable table" is printed on top of the text of the floating infobox, yielding a strange mixed-up look. The effect is illustrated in the attachment.

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