Hey Roman,
I was playing with the developer mode and had spotted one item. Again I am a newbie at this and just remember what someone else had mentioned on one of his projects, but on the pic below, I was wondering if it was junction 443,444,445,446 that might be causing the issue. As the AI aircraft is sitting there, it looks like its trying to take that left turn onto taxiway C, toward runway 5, but there are no taxi spots assigned there. I was wondering if those were deleted, would it cause the aircraft to take taxiway C to B instead.
Again I don’t have your expertise, but it was something I read a few weeks back.
For a landing aircraft, there would be no reason for it to go off runway 30 in that direction. As all the parking are off to the right.
Just a thought.