Sacred Reservoir Boss Bug

Map is unplayable due to the endboss.
If u enter the room ur slowed until he spawns, which is normal.
Apparently Abyss Pits can spawn in this boss room aswell.
But u can sprint, dodge or use abilities during ur walk to the boss which guarantees a death for you.
Even if u get the boss to spawn, u cant use lightning warp to ur balls of lightning in this room for some reason.
It happend many times to me now and iam a bit tilt, i lost 2 77% quantity maps to this -.-

Pls fix!