ok so i was on the underground map and i found an interesting glitch. i was on the defending team and the door that was facing the balcony (the other teams balcony) was see through. I could see through the door, shot through the door, but i couldn’t walk through the door. The door was constructed but it acted like it wasn’t there. I can provide pictures if you need them.
invisable closed door
Patrink
(Patrink)
#3
I can confirm the same thing in underground, except I wasn’t able to shoot through the door. My nader’s grenades just bounced off the wall. I didn’t try shooting through it though.
I could see everything inside the room, but the door was still “closed”.
toolboxRhyme
(toolboxRhyme)
#4
I can also confirm this happened. Felt like I was cheating.
I felt so dirty…
So… dirty…
Fr023n
(Fr023n)
#5
You could shoot through, but nades, proxy mines, or turrets could not be shot/put through “invisible door”. Only thing i didn’t try was knife, but i don’t wanna stand there and wait 
I think on twitch stream “shoe” said that restarting game would fix this. Same thing could happen on trainyard where you could see through the wall where train crashes.(not 100% sure about that, couse i was playing DB and watching stream at the same time)
But restarting game does not help, since first game i tryed after restarting game was underground and door bug was still there. Maybe restarting computer?
But this bug doesn’t happen all the time. After playing few other maps and then go to underground map, door bug is not always there.
RyePanda
(RyePanda)
#7
Already mentioned here: http://forums.dirtybomb.nexon.net/discussion/17446/underground-side-objective-doors-bug#latest