Minions stay outside arena (copper citadel)

Another "please fix minions" thread ;)
I am playing with a friend and when we entered the Jamanra fight in the copper citadel nearly all my minions stayed outside the arena in front of the gate unable to fight... guess the outcome.
Minions are getting stuck very often or staying too far behind

Bring an extra set of weapons that doesn't include spirit and such, switch and switch back, and the minions will despawn.

Great idea for a workaround ! Thx alot ...
but "unfortunately" i ve spirit on my amulet and spirit from the ascendency so 5 minions will stay alive after weapon swap