ng-animate class not removed if removeClass() called before addClass() completes

[georeith]

I have reproduced an example of this issue at http://jsbin.com/vahokopa/2/.

The issue occurs when a custom JavaScript animation is added via the $animate.addClass() function and is accompanied by $animate.removeClass(). If the done function is not passed before the animation gets cancelled (removeClass is called during addClass) the ng-animate class is never removed from the element once the removeClass function has completed (and vice-versa).

To see the issue just click anywhere in the output window on my example twice within 2 seconds.

This can be problematic if you are using the .ng-animate class to apply styles during an animation.