A unit stuck in the Prison after a savegame instead of being imprisoned
You can see it says the Prison holds 6 prisoners, but there are 7 units inside. I have a hutch it happened because I saved at the moment it was being dragged inside, because I just defeated the group pictured and they were en route to the Prison when I saved.
I've simply not been able to figure this out after several hours of testing today. Tried both save and load testing along with large scale prison capture testing. Unfortunately nothing seems to yield results. Overall this is a fairly minor issue so I'm going to close it down as unable to replicate but if more info ever comes to l ight let me know :)