Hi, thanks for this game which I enjoy.
I’m sorry I don’t have all the required info. All I can report about this bug is I was playing mongols 4x4 and I had just moved my army to the enemies base but the player left. I let my army destroy the town hall anyway and focused on my economy then when I came back I found my units stuck in the (also mongol) deserted enemy towncenter. If really needed I might be pursueded to check out my recent matches and see if I can get more details.