[GAMEPLAY] Sion's ultimate stops and gets stunned at ally Azir wall.

When a Sion uses his ultimate and touches an Azir wall, when he should be passing through it, he actually hits it and gets stunned as if it was impassable terrain.

1. Have a game with Sion and Azir on the same team.
2. Have Azir ult and then Sion ult into the Azir wall before it goes down.
3. Sion will get stunned on the Azir wall, even though ally champions are supposed to be able to pass through it.

I have had this happen in a normal Summoner's Rift game, and recreated it in a custom on Howling Abyss. Both times Barbarian Sion and Galactic Azir were used but considering the bug I doubt this is relevant. Items on both champions were different in each scenario.