Ceiling missing when placing a room down

After the patch, when I build, there is no ceiling on top of the room. When I press on the room, it says “remove ceiling” even though there’s no ceiling. I press it anyway, and then click again and press “build ceiling” and the ceiling shows up. However, when trying to create a loft or larger cut out around stairs, this option does not work, it will remove the entire ceiling instead, not allowing for a simple cutout for a loft, etc…