Olaf bug with critical hit

When playing Olaf, I have noticed that the auto attack animation for a critical hit is slightly out of sync. Instead of the damaging being applied when we see him hit the foe with his axe, the damage is applied while he is bringing his axe up. It is only a small bug but it is still quite noticeable and sometimes quite off putting. Please have a look into this and see what you guys can do. Cheers.