Forcing rollout animation to play


I’m trying to figure out if there is a way to force a rollout animation to play for a button. When the cursor rolls off the mouse it plays the Rollout animation, but if the cursor rolls off the button directly onto another button the Rollout animation does not play…

is there a way to force the rollout animation to play when the mouse goes to another button? seen it done on other sites but I can’t figure it out

( - click on portfolio in the menu and on the right is the menu im talking about, if you go from one button to the next straight away it doesnt play the rollout animation for the button you just came from)