Every time you are in a dungeon and you dodge roll out of an AOE and your charcter actualy dodge rolls, or you hit block to block an attack an your character actually blocks, chances are you just did animation cancel a skill or a light/heavy attack animation with your dodge roll or block.
That's fine.
But while you're cancelling the animation, you should also be cancelling the effects of the skill. You know, since you didn't finish casting it...