[Webkit-unassigned] [Bug 112229] New: REGRESSION (r133351): "Popover" arrow shifts up at end of fade transition at hulu.com

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=112229

           Summary: REGRESSION (r133351): "Popover" arrow shifts up at end
                    of fade transition at hulu.com
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
        OS/Version: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jonlee at apple.com
                CC: ap at webkit.org, mitz at webkit.org, bdakin at apple.com,
                    simon.fraser at apple.com, leviw at chromium.org,
                    webkit-bug-importer at group.apple.com


1. Navigate to <http://www.hulu.com>
2. Hover over one of the items under “TRENDING NOW” to show a white “popover” with details

The popover fades in, then when it reaches maximum opacity, the triangular part pointing at the hovered item shifts up by a pixel or two.

It seems to depend on a calculation that divides by two. Depending on the thumbnail you hover (for example, further below in the page), you get either top: xxx.5 or top: xxx.0 (integer).

<rdar://problem/13345303>

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