I have a highway going down the length of a bridge and a structure running perpendicular to the bridge. On the West wall of this sturcture I could build windows, on the East side I could not. Idunn unplanted the catseye on teh East side to allow me to build the window, then replanted. She wanted me to post this as a bug
She also stated, once she replanted the catsye that the highway system should go green again in a few minutes. It still hasnt hours later, that leg of the highway remains under construction. I even replaced a waystone with a catseye, then the catseye with the waystone again, didnt help.