Hover state is true even if element is disabled

I think this was meant to be fixed with #689 (which was released in the 0.17.2 version) but it's still triggering the :hover state on disabled elements.

Simple fiddle: https://jsfiddle.net/b8ve7ybx/4/

Just click on the check box to disable the button and hover it.

You can see that if the button is disabled the hover state is still triggered which causes the :hover style to be applied when the button is enabled again, even though you're not actually hovering it.

I'm not sure if it's the same issue as #527 but just thought it'd be worth mentioning.