[GAMEPLAY] Can't exit game after winning ARAM as Sion

When playing as Sion on ARAM, I can't see the victory screen and correctly exit the game after getting eaten by an enemy Tahm Kench.

Steps to reproduce:

1. Win ARAM as Sion with Tahm Kench on enemy team
2. Get eaten by Tahm Kench right before minions destroy the nexus

Screenshot here

Mac OS X 10.11.6 El Capitan