I got the crazy idea in my head of trying a LHD map. Bowdenham is a popular choice. I turned collisions off (as I always do) and started to drive. I was driving route 40 in the direction of Apsley. When I reached the second set of traffic lights (after the long boulevard-like road) I turned left and almost immediately crashed into an invisible wall.
I checked the settings and collisions had been turned on - I turned them off again and tried to continue. I crashed again. Collisions had been turned on again.
And then this popped up.
pedepe.de/community/index.php?attachment/4992/
WTF‽