Hey,
it is a 2D stair component. I am not quiet sure how this stair label/component is called in english as i am using the german version. I uploaded it if you want to dig into the problem. Hope you are going to find a solution or at least the problem.
Thanks
https://drive.google.com/open?id=18ebKacxvC_eX6RV3tFhZw3VN9FXZvU-N