Sloped ceiling hangers sript work on some hangers but not on others

Hello, I have a problem that I cant figure out. I have two (or more) identical hangers under the same face that I am trying to project to,however some of the hangers do not project, yet others do. And they are the exact same hanger! I even used the matching tool to make sure they are the same, but still not dice. I manually checked the levels and tried changing them around, I even tried to reverse the Z direction vector of the projetion. Still not dice. Can anyone help me solve this riddle please?
Thanks!