Ok, so I've come from a game on a pretty big map with lots of AI plaayers, and I noticed some things that weren't quite right with it.
First one was really early in the game. Made my second settlement, but I noticed it had an unusually high unrest. I was playing as Altar, so it wasn't due to cruelty or anything. Opened up the details, and there was an occupation penalty. Now, I'm somewhat new to the game, but I'm pretty sure that's supposed to be on cities you conquer, not cities you built yourself. Even by the games end, it had that same penalty to the unrest.
Next was near the endgame. I seem to recall that the Spell of Making requires one of each shard type and the forge of the overlord. To get the forge, you need to build three towers. Now, I noticed that one of the weaker players was putting together the towers, so I put my three highest production cities on the job, so that they'd all get done in eight turns. Finished mine around the same time he finished his, so I then set my highest production city on forge of the overlord. I couldn't rush it, so bided my time like a good sovereign, and started playing "who has the most faction power?" with the my main competition. Quickly put him in his place with my high production fortresses. The problem was, when the forge was completed, I could cast the spell. I originally thought I'd need to conquer some wildlands to get an earth shard, but the spell was perfectly viable for casting. It seems like one of the towers was providing earth power, is that intended?
Final bug was that while I waited for the spell to complete, I set up research for a few miscellaneous things. On the turn that the spell was cast, research was completed, and the popup asked for another research option. I set the research and clicked done, but the window would not close. I think it may have been messed up with it opening on the same turn I won, so might want to look into that?