Firstly some battles are very buggy, AI gets stuck on a lot of areas and if you die the battle will go on forever unless you retreat, which can lead you getting captured.

Second thing is on the Mithranian capital, the AI that spawns to rob/kill you when going to market spawns so far away, takes ages to walk and find them. Also the ivy/grass texture on the walls is bugged causing you to see through the rock into into the mountain.

Third thing, I've noticed the trainer spec doesn't actually give xp to your units, I've sat in a city for 20 days and nothing has happend to unit XP. Is this a change or a bug?

Fourth thing, one of my villages (whilst I had a constructed castle) apparently became a castle. Not sure if this is a bug but it looked a villages whilst having the menu of a castle.