So I have noticed that there are some random squares of green “walkable areas” where there shouldn’t be.
They are sort of attached to a remote stand, but on the far side of the roadway.
So sometimes passengers decide not to take the bus, and instead find themselves standing on this random square and then getting a path analysis failure!
I submitted a bug report just now, but the bug number disappeared before I got to note it down for this post.
That happens when you build stands and you reload the save before you assign a remote boarding desk. It creates a secure zone where the crosswalk is.
Just remove the secure zone pieces.
In case the stands are international, it also creates international zones.