[Webkit-unassigned] [Bug 146996] New: Safari mis-applies "animation-fill-mode: forwards" when using fractional iteration count

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=146996

            Bug ID: 146996
           Summary: Safari mis-applies "animation-fill-mode: forwards"
                    when using fractional iteration count
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Macintosh
                OS: Mac OS X 10.9
            Status: NEW
          Severity: Major
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: freelanceb at impressivewebs.com

See the following demo:

http://codepen.io/SitePoint/pen/VLXQmM

Notice in all other browsers, the ball stops halfway. In Safari, the ball stops briefly, then jumps to the end. This seems to be an attempt to apply the "forwards" value of the fill mode. But this is incorrect behaviour. The "forwards" state is at the half-iteration point, not the full iteration. Sorry for not creating a RTC. Someone could easily do that using the code in the demo, if necessary. Note also that the demo is using autoprefixer to add the missing "-webkit" prefixes automatically, so these don't actually appear in the CSS panel.

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