I had a large run on the floor of my building (inside) and placed an Artisan bench and an Armor bench alone with two large chest atop the rug. I noticed the rug was off center and showing through the wall. I picked up the rug to se it right and everything on the rug was destroyed. Chest and benches were destroyed and all the items ended up in a gunny bag.
Please say this is Not supposed to happen.