[Gameplay] Kayn ULT reset Bug

This bug happened to me the other day where when Kayn ults me and dies in his R while inside of you with Guardians Angel up, his ULT resets and he is able to use it again, so he could ULT 2 people in one team fight and do damage to both but only get the heal from one. This is pretty game changing when it comes down to that final team fight and it could cost you to lose your game just because of this.