the on.leave event seems not to be working

[extrabright]

Hi,

I am trying to add stop some animations when those elements are not in viewport. I try this using your plugin with the on.leave event and it does not work. However, the on.enter event is working fine. Is this a bug?

Thanks!

[silvestreh]

It's hard to say without looking at any code. Could you put up a JSBin demo or something so I can take a look?