It's not very elegant, but I tested it and the party bush doesn't seem to cause the same problems. I deleted the toilets but didn't need to get Steel Bladder.
Is the party bush in build/buy? That could be an easy temporary solution.
Tested with a new game, everything clean and new, no Landgraab's, no download house.
Still cannot put things in ANY frig no matter where or what kind. Haven't tested trying to drag to sink or trash but it will probably be the same. Same problem with queueing. Next shot is going to be to uninstall GT.