I have experienced similar in other areas of the map but nothing like what I have experienced in the underground. I managed to record a video of it and show where I am at on the map. Not sure if this is the same as what you have experienced. This room is locked behind a padlock so I should be able to go in. Also there appears to be no loot that you would normally find behind a padlock door.
https://www.youtube.com/watch?v=bDtu...ature=youtu.be