For multiple chapter two fights (our two being the Mercy fight and the Nerukai fight) at least one player will spawn outside of the arena. This problem will persist for multiple rounds or restarts and will take at least one person every time.

This was with a party of four, both with and without leach summons. Though having summons or being the lobby leader seems to preference your banishment.

Love you, muah
The bois at Aisle Seven