I got to the point where I was going to the secret escape and the blue mission marker marked the door of the tunnel. I have gone through and cleared all the next areas until I need to talk to Delgado on the Intercom. (I watched guides to ensure I wasn't simply missing something) the intercom won't work and the mission marker is still at the entrance to the tunnel. I have reloaded numerous time and nothing changes it. I had to load 8 hour earlier save to fix this issue as I couldn't leave. This is the 2nd time I've lost over 6 hours reloading from quest bugs. If I don't report it it may not get fixed but I've seen numerous posts on reddit talking about this.