What is the number of roads in this case?
If you played a real board game, how would you count it?
That would be 14 continuous road pieces.
If you agree that it must be 14, we must think how to persuade the Tech. support in this. Check this out: https://forum.catanuniverse.com/topic/6603/bug-road-of-length-14-counted-as-length-13/4