[Webkit-unassigned] [Bug 44110] New: Transitions paired with relative position causes a flash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=44110

           Summary: Transitions paired with relative position causes a
                    flash
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
               URL: http://nwhsu.insidenewcity.com/test.html
        OS/Version: Mac OS X 10.6
            Status: UNCONFIRMED
          Severity: Minor
          Priority: P3
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: wcbaker at gmail.com


When I hover over an item that has a CSS transition, it's parent's siblings flash. The siblings and the parent all have relative positioning and z-indicies. This bug is hard to reproduce, but it's definitely there.

Here are the conditions:
- Container (header) holding transitioned item is positioned relative and has a z-index of 100
- Container (nav-main) below header is positioned relative and has a z-index of 500
- Container (content) below nav-main is positioned relative and has a z-index of 100
- Nav-main has a form with a <input type="submit"> with image replacement (background + text-indent: -9999px, etc)

Replacing the <input type="submit"> with an <input type="image"> seems to fix things.

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