I encountered a few bugs and minor issues while playing.
Bugs
When you begin the game as a black khergit you start with 400 black khergit guards.No matter how many points you give to charisma/leadership you can't get a party with more than 100 members , not to mention that they ask for roughly 40k denars per week when you start with 4500.I know i can dismiss them down to a reasonable number but wouldn't it be better to start with a reasonable number in the first place?
I conquered the castle of the bandits (without belonging to a faction so i became the Outlaw rebels faction leader myself) and went to Narra to resupply food after a long siege.When i exited the town and before i got to choose a banner i saw a group of deserters near me moving at a high speed.I hovered my mouse over them and saw that the unit was actually me

, or rather a copy of me.I saved and dismissed most of my party exept 2 npc followers so that i could catch up to me (i know it sounds funny)

When i finally caught up , the new me had the same dialogue options as a faction leader.I even had the choice to become my vassal.I chose to fight me and the copy was a complete clone of me and my gear but was sitting there doing nothing waiting for me to kill....well to kill me!

Maybe you can do something about it.(Although it was fun kicking my own @$#)
Is engineering working as it should?At my conquered village , building a school takes 48 days , even though i got engineering at 10.The siege tower construction is also taking a lot of time considering the high skill.
Minor issues(things that are not really bugs but rather gameplay hinderances or small details)
Old and new Khergit Tarkhan Warhorse are identical to every stat (even price) but the new one is faster by one point.
The Royal "dreadnought" horse needs 10 points at riding.Although it sounds reasonable , that makes its stubborn version requiring 11 points at riding that simply can't be aquired.Maybe lower it by one point to make every horse in the mod available (i haven't seen any champion versions of horses so far , if you are using them , then the champion one would need 12 riding!)
The ghost knights are a nice concept but i think there are a lot of them around in the north and the more i play the more they spawn.They simply don't leave any sea raiders around and many players rely on their rather expensive loot to cover a part of their income (and renown).Maybe you can make less of them spawn.