[FIXED] Roofs can't be placed in enclosed rooms

@kreatora Good point! I have also been noticing some of this recently. I thought it was something I hadn't noticed before or something. Yes, I have noticed that dragging a wall to complete the room instead can sometimes work (as you mentioned). I would recommend confirming that the room is seen as a room by the fact that it created a floor automatically after the walls were done, and going up a level and checking that your ceiling self-created. You can also click on the wall and see if it shows it all as one unit or as individual walls for any/all walls. Please confirm that the grid is there when going up a level and that the roof can be added onto the grid &/or ceiling.