06-25-2017, 04:41 AM
I've had that graphical glitch happen on a map or two in the past. I can't remember anything specific but I seem to remember that the traders could pass over it without any problem. I vaguely recall that after playing one of those towns for a while the glitch seemed to fix itself. However I did decide to end that map and start a new one because, as I always do, I installed some new mods and just "had" to start a new town!