Well, I don’t know if it’s the new improved barracks, it always have been like this to me because only recently I managed to get this far on the game, the place have some rooms for which I believe are the Grunts, one room for the CO, and a bathroom with two toilets if I am not mistaken.
Also a new Bug, or at least something I find that should not be happening, some times when I take the stairs down on the labs I end up on the monsters cages OR inside the armory of the barracks. I am playing the 7.1 version.