Malchar
Prince
Not sure if this is a problem or not, but in one instance, I took over all the maya cities. I play with the option where you have to kill all the player's units before they die, so maya still had some culture sitting around on random tiles near the city outskirts. Later on, I finish off maya and the tiles lose all maya culture. Later, there's a revolution and maya shows up to take over some of my other cities, and they instantly got back all the tiles that they used to have control of at the time that I had taken over all the maya cities. Not sure if that makes sense, but it's not even that big of a deal.