[GAMEPLAY] Caitlyn's AA damage applied instantly (at the beginning of the shot)

As the title says, few games the damage from auto-attack got applied instantly when playing Cait (at the same moment when the bullet comes out of the gun, instead of when it actually collides with the target). I can't reproduce it since it happened only a few times to me, but it's making CSing difficult since you need to get used to it for that one game.