Ok, so I'm on usps. Every time I get to the first boss, I cannot summon my allies while I'm in that particular room. Afterwards, everything works fine. It just seems to be localized to that one room with the first sub boss.
Yea like the others said, they are invisible and the boss still attacks them which is kinda funny. Now some of the adds are invisible on the way to the first boss. Anyone else notice this?