Mission Triggers Stop Engineer & Factory Queues in Coop. Possible Bug.

Factories and engineers get hung up after mission triggers in coop. Seems to be consistent over all missions. Once an objective is completed and the game forces your camera to zoom on the next objective all your factories and engineers stop building their queues. Only possible correction is to completely stop production or delete the queue and give it a new order. Even that fix is inconsistent at times unfortunately.