Quick Question How Come My Funiture In My House Keeps Disappearing?

I'm having this happen as well. In my case, it's my sim with the "Recycle Disciple" trait doing it. She gets a tense moodlet when she doesn't recycle for a day or so, and then will randomly swipe something from the house and recycle it. It behaves exactly like the klepto trait, with the only difference being the fact that she's recycling the items. I do get a popup that says she 'successfully swiped an item without being caught' (or something along those lines), and she gains mischief skill from doing it.