Okay. I've noticed this a few times on different maps (it's a fairly common building). Anyway, here goes:
You cannot jump out of the "upstairs" portion of this static building. In that picture, part of the upper room's wall is destroyed, but you cannot jump out from there, it seems like there is an invisible wall there. I'm assuming it's some bug in the collision mesh or something. I'm fairly certain you can spawn in that "upstairs room" on Giarabub at least (on the East Giarabub Flag). You can also get into the room normally if you climb the stairs at the back of the building, and then traverse along the partially destroyed wall and hop into the room. The only exit is either back the way you came, or hopping down into the main bombed out area on the first floor. It's kind of annoying to attempt to jump down from the second story and be prevented from doing so by an invisible wall. I can guess that maybe the original intent for this static was that you wouldn't be able to enter the second floor room, but you can enter it, rather easily actually. I think you can still shoot out of second story room (through the "invisible wall"), but I'm not entirely certain.
Anyway, it's not a huge deal. I just thought I would point this out.