Ahn, This bug again? I thought I had finally fixed it.
It's one of those things that happens if the overlay maps script for some reason breaks. (No errors found in the log so it's hard to pin down)
I will try and make another workaround for it.
The bug tends to fix itself if you close the game, load a save in which it's not broken and then load your latest one one again...
But I don't know the reason behind it.
I will try and make sure the issue can't happen again. But I am no coder so, wish me luck.
Edit: It should be fixed, in a way that allows you to get out in your current save too.
This bug makes me just want to tear the game down and rebuild it from scratch~