[OPEN] Disappearing Ceiling (Glass Roof)

I just experienced this bug last night while trying to build on the 50x50 lot in Newcrest. I have every Stuff, Game, and Expansion pack except Get Famous right now. The rooms on the first floor have invisible ceilings just as you describe. I can select the room and go up one level to see the yellow outline and when I click that it only gives me the option to "Remove ceiling". That means the room supposedly has a ceiling. This goes further than a simple render glitch though. I found that I cannot place any object on top of rooms with the invisible ceiling. I tried to place a flat square room on top of the invisible ceiling room and it wouldn't let me. I then found if I placed the upper room on the corner of the lower room so it was sitting on the walls then I could place the room. Then if I pull and stretch the upper room so it matches the dimensions of the lower room the floor disappears! I also could not place any object on that upper room. I then tried placing a fully enclosed square room on top of the lower room with the invisible ceiling and it wouldn't let me. Once again, if I placed it on a corner where two walls meet it would let me place the enclosed room on top of the lower invisible ceiling room. But, when I reshaped the upper room to match the lower room the floor disappeared and I could not place any object in that room. Anything I tried to place in that upper room just got placed in the room below it.

I don't recall having this issue before the emergency patch that fixed the CAS aging. Maybe there needs to be an emergency patch for the emergency patch since this glitch pretty much breaks building anything more than a one story house.