[Jockes]

I thought about it:

Yes, I have those. But I got an answer in our Swedish forum, the problem is when the AI is looking for a path, but it doesn't seek for the shortest way, it try at all junctions the left direction first, and as left is wrong in this case, it'll go that way, even if it's longer, shortly explained. Could be solved by placing invisible track+junction after the first trackmark, but I made the loop go opposite direction.