[OPEN] Disappearing Ceiling (Glass Roof)

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Often (50% - 99%)
What is your current game version number? 1.54.120.1020
What expansions, game packs, and stuff packs do you have installed? Seasons, Cats and Dogs, Get Together, Vampires, Laundry Day, Romantic Garden, free holiday stuff
Steps: How can we find the bug ourselves? I was working on the Hound's Head lot in Brindleton Bay, and towards the back of the lot I built a 11x9 room and then built a 7x9 room on top with 2 tiles empty on either side of it. (I have the lot I was working on uploaded to the gallery titled glitch test under the same username, Astaraya)
What happens when the bug occurs? The bottom room doesn't register as a room or closed and the floor/ceiling of the bottom floor sometimes disappears when you turn the camera at a certain angle or when I'm hovering over items with my mouse in the catalog. When I try to eyedropper the floor in the room on the upper level or place things in the room, they register as being on the bottom floor instead of the upper floor. When the room is closed due to changing the flooring of the room, roofing still has a problem being able to be put to the side of the room an doesn't register until 2/3 tiles of the roofing are hovered inside the closed room.
What do you expect to see? I should be able to close the room on the second floor and be able to put objects, etc. inside the second floor and roof as well.
Have you installed any customization with the game, e.g. Custom Content or Mods? Not now. I've removed them.
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure 

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Please refer to the thread in the Technical Issues forum I had with @SheriGR. Thanks.