Hi!
I know the thread is from years ago, however I am experiencing the same problem regarding respawning resulting in spectating AI.
Similarly I was trouble shooting this with a mate, we found that respawning would work as intended if we were in seperate groups/units. However if we spawned in the same unit (no AI) from the intial start of the server respawning would result in spectating the other player. Furthermore spawning in different groups and joining one another group with the ACE interaction menu resulted in the same issue when respawning.
Did the OP find a solution to this problem?
I cant find anything else regarding a solution for this or an instance of this problem occuring.