hide() with 0ms with not call callback

If you call hide() on an element with a 0ms animation time the
callback will not be called.
Now, I know this doesn't make sense in application as a $e.hide(0,
callback) would imply a synchronous action, but it was inconvenient
that I was just debugging hide/show timers and noticed that a 0-ms
animation time yields a hide() without the callback.
Here is an example:
http://pastebin.com/m3cb285b2