Furniture Problem

So when I'm trying to place items in a room, they are a lot of the time "configured" to 100 and it messes a lot of stuff up/ makes things so high their out of view and I have to clear room.
Sometimes when I place items, they're fine, and then I leave the room and come back, things are floating everywhere.
OH and these things were NOT set to above 0 before, like I didn't set it to these numbers, put em away and later took them out of my inventory. They're doing this on their own!