I have needed tom place stairs that go through a doorway on multiple occasions, and every time I try it would seem the program glitches and usually breaks the wall or the doorway so you can see the structural materials. The best solution I have found was placing two staircases on either side of the opening, but even that solution isn't perfect. Has anyone found a solution to this?? Am I doing something wrong? I feel like it's pretty common for stairs to go through openings, so it would seem odd to me if chief would not have an option for that.... I attached a picture of what I am encountering.