Okay so this is getting ridiculous. Sweden owns part of India.

Distance, borders, religion and culture seem to matter far less now, leaders will invade anywhere that they see an opening. It happens in every game, West Francia will always invade Africa and the Italian states and barbarians will always end up everywhere.

Another irritating thing that also contributes to the above. If somebody declares war to take a duchy it is the king that is the target not the duke that actually owns the land. This causes two things, one if you are the duke yourself you basically cannot win the war yourself, they appear as a hostile army not an enemy so you can defeat them when they appear but you cannot take the fight to them, therefore you must raise your army and just have it sit there wasting money and defeating them whenever they try to invade again, you can try to chase them but a defeated army will always outrun you, so you just have to wait for the war score to tick up or for your liege to intervene. Which brings me to two, when your liege is fighting a war and losing his army strength depletes so he may have a strength less than many dukes around you(or anywhere, they don't care where you are) and so the AI declares war on the king because his army is larger regardless of how large the army of the duke that actually owns the land is, so the king will be losing a war and then numerous dukes(or equivalent) will declare war for your land which you cannot do anything but raise your army and sit there to defend, the king probably won't be helping for a while if at all.

There also seems to be a lack of content, for example the Han and Burmese culture literally use the hair style of the steppe tribes, there is no Chinese hair style in the game.