EDIT: Gah. When I searched -before- logging into the forums nothing else about this showed up but then afterwards it did... Can't find a way to delete the post so... Oh well.

I've managed to accidentally stumble across a bug related to city zone of control...

If you build a city, and in that city place a monument, the Zone of Control for that city increases.

But what happens if you delete the monument and rebuild it..? Ideally, nothing.

In reality... This:

Map

Those black lines along the edge of the fog of war are the city's zone of control borders.

I was expanding the city by deleting/rebuilding to see how big it could get [determined that it allows you to snake up to 8 large-tiles in each direction for a total theoretical city size of 17x17 large tiles], and the monument (since it's a base structure) was one of the handful of buildings I was using to expand the city's walls. I didn't actually notice the zone of control change at first, I thought it was retracting and expanding when I got the messages, since I wasn't looking at the zone of control but the city walls...

Then I heard about something of mine being destroyed to the southeast "Hm, that's odd, I didn't build anything to the southeast..." and when I scrolled over, I noticed my zone of control had actually swallowed up another civilization and taken control of all of their unattached resource improvements, one of which a roving monster destroyed.

Anyways, as you can see from the screenshot it's not a simple matter of "Oh your city can get slightly larger than it's supposed to" but... I instead managed to swallow up several civilizations and wildlands (though the wildlands did maintain their borders! my ZoC merely surrounded them)

Thanks for reading this!

shiverczar