[Gameplay] Olaf can use his E during Riven's W stun.

On Olaf, you can use your E ability while stunned by Riven's W. The animation and damage of Olaf's E is emitted even while stunned by Riven's W. As long as you press your E during the animation of Riven's W, the damage and animation will go through even though you are supposed to be stunned and not able to have access to any abilites. It has happened on more than just one occasion. Please fix this.