Basements will not create irremovable flooring between levels.
Fixed in Patch 1.55.105
I am playing on a Macbook (laptop mode) and the latest patch just dropped (UPDATE: 6/18/2019 – PC 1.52.100.1020 / Mac 1.52.100.1220) and now my house has a strange issue. Beneath my mansion is a giant underground Film Studio that I meticulously built. Due to the MASSIVE size of all the set pieces (you know real life green screens come in normal room sizes too, right?) the only way I could build a set on my lot, even a small fun one, was to build a multi-story basement at least 3 floors high. It was great when it was done, and i loved going into First Person to watch the long trek from main floor to the set, it was an adventure! But now the new patch dropped and I jumped into my game to make sure any mods (I pretty much only use the remove blur and a few outfits, nothing that really affects gameplay and no scripts) were still working, and discovered a problem with my giant underground studio. Every floor now has a dirt floor that I can't get rid of. My sims can still walk to the bottom, but they have to phase through three boring levels of Hell to get there now. I've tried to "delete floor" but the only option it gives me is to add floor, and even if I do that and delete it, the dirt just comes back. I just got back into sims when it was free recently, so I'm not even sure how to do half the stuff in the game still, so I have NO ideas on how to fix this on my own. When my sims are on the ground floor (especially in FPS mode) you can't see the dirt ceiling as it disappears, so once I'm actually in the studio it looks fine, but the dirt is really obnoxious making it so I can't see what's going on if I go up a level to interact with something. Obviously it has something to do with the patch and I've tried repairing game and no luck. Will honestly truck on dealing with it till I hear back because I don't know how to fix it and the studio was too hard to make to start over right now, so hopefully this can be fixed without having to rebuild or restart as it worked fine prior to the patch.
Edit: Upon further playing while still dealing with this issue, I have also discovered that activating the camera (in your inventory) to take a photo of the set, has a new issue that I can't say i've seen before, but not 100% sure the patch is to blame, but once in camera (photo) mode while in the basement lower levels...the entire world disappers. All the items I've placed still exist, but walls, ceilings, floors, and everything else goes invisible. Only placed items and natural terrain remains. So I'm basically taking a pic of under the map.
Of the 3 included pics, the one of my sim (in the red shirt) shows the room in the background with walls and floor. Then the two other pics are of the same room viewed through the camera. Weird textures on the floor, invisible walls. etc. I used to like to take pics of sims interacting on the set.
Seeing the same issue in my game. 🤨
Don't know if it will help to identify the cause of this issue, but I noticed that if you delete only a part of the basement floor (in this case I only removed the center portion), the dirt floor will glitch through the rest of the un-removed floor (kind of like how objects glitch when they're stacked using bb.moveobjects).
