Disruption syndicate missions not spawning enemy

[(PSN)heroic2kilowatt9]

I go to do syndicate disruption missions from a couple of syndicates and the enemy spawn is bugged. It spawns around 5-6 enemies then spawns no more, doesn't drop any keys and can only be sorted through mission abortion. I have done this across a couple of days and syndicates with all the same results. I have not tried an actual disruption to see if its the same.