I reported the same earlier but no answer. The author stated in an earlier post that he will not update for a while, presumably he has some issues in life. However, I did some research and found a way to get rid of this. I don’t know if this is the correct way but I think it is the least intrusive way and it seems to cause no side effect. Add the red circled part to the construction script of the Snappy Road BP with “MeshSegmentIndexes add 0”