My first playthrough with more than 400 days is bricked because of this. I am not beginning another campaign merely because of this bug.
Needs immediate attention.
I created another party with Chavil Bloodaxe and he began waiting next to a village forever after some time.
I tried to kick him by talking then I told him I was joking and didn't want him to leave, a battle preparation screen has come (versus my own clan's party).
This is repeatable for me and...