Not 100% sure if this qualifies as a bug, but the server seems to be constantly (as in every five minutes) going down. My internet is working fine, and the game starts fine; it's just after a bit (sometimes as little as a few seconds) the server goes down. When I start the game up again, the server is fine, until I get into one of my cities.
This is really annoying, 'cause I'm trying to seige Darssen again (after I was stuck at the last gate with no treants, a dead dragon, and no ammo for my bolt throwers) but I only get a few minutes in before the game closes.
That was so funny, I laughed twice.