ANSWER:
The roads will not work if the gamebuild from the server is over tuner!
With the gamebuild tuner everything works as it should, but if you take a newer one then the roads will disappear.
SOLUTION:
So the solution is, if you want to use these leaked maps, just switch the gamebuild to tuner!
But if you don't want to switch the gamebuild to tuner, then the easiest solution is to buy the MLO.