[GAMEPLAY] Malphite Ult + Sion Stun = Stunned in Air

So, I was playing a game of Malphite and ulted Heimerdinger up into the air and then sion proceeded to stun him. He was locked up way in the air, we did not get the opportunity to see if after the stun he would come down as our Alistar knocked him away from our reach.

1. Knock Up Enemy Champion (like malphite's ult)
2. Stun Enemy Champion WHILE they are in the air.
3. Enemy Champion should be stunned and locked up in the air until the stun is over or until another action occurs.