Tooltip occasionally won't hide when using a hide delay

Fix for issue #14375

Error demo can be found on http://jsfiddle.net/d45cc0rs/
Fixed demo can be found on http://jsfiddle.net/7ga1mz6r/
Ah flip! Thought I got them things!

Fixed in 54ee72470bad0eb72468fa06db39eb084c9a3f44