build mode furniture and decorations dissappear

Hi, no it wasn't placed with move objects on, it's a bunk bed, it just slotted in place... but it has been happening in other save games to, where object on a night stand, or dresser dissappear to. It's always random objects for every house, but the same objects per house, even If I try to place them somewhere else they keep doing itit even happens to plumbing and stuff