I can confirm this too. This bug still exists in the game.
I was in a group of four and encountered rogue agents in the same room.
After clearing the room, we couldn't progress further. Tried resetting the mission but that didn't work either.
Had to go back to DC to switch servers back and forth in order to fully refresh the session. So annoying.
One thing is for sure that Rogue Agents trigger this bug.
Mission progression works fine without them spawning.
LAst night this happened to a group of 4, we didn't even get rogues and still weren't able to pass the 'check the infirmary' area.. when walking upstairs nothing happened, we restarted the level, same thing happened.. again without rogues! the bug seems to be worse even now..
I was supposed to get 450k XP playing this level, which is now impossible..
omg.. and they ask to come with proof.. so many people in the community know about this..