This is occurring for me as well, before and after the 1.1.0(.35) update.
Earlier in the game I was able to visit it multiple times. Now going directly from the map into one of the building in the Brass Citadel is fine, it's only the Citadel map itself that causes the error to occur. I've tried restoring a save before visiting Neketaka and entering again but it consistently crashes.
I'm using the Steam version and have validated the game files.
Please let me know if you're like a save to reproduce.
