[GAMEPLAY] Yorick's ult cooldown bug and possible minions' bug

Hello! So when I played Yorick early, I experienced some problems. First of all, whenever I used Ult and summoned the Maiden the abilitt went on cooldown while the maiden was still alive (something that shouldn't happen because the Ult is supposed to go on cooldown after the maiden dies). I didn't test this but it could possible lead to a situation where 2 or more maidens can be summoned. Also, when I used my ult on a lane and left the lane, if there weren't any minion to attack tha maiden and the ghouls would leave the lane in order to follow me. I dunno if this is intentional or not, but if it's not, it can be quite the problem when you want to push using the ultimate.