Yesterday I found that retrieving a linked-child furnishing causes all other furnishings linked to that parent to be severely displaced and undo does not restore them. Selecting and then moving or storing linked items has not caused any such issue, but with some shelves and cupboards it is impossible to select the items manually. In the future, I will be sure to unlink items before retrieving anything as it is quite frustrating when a careful arrangement of numerous items is obliterated.
Xbox/NA here, and having the same issues. I spent more time than I care to admit building a custom fish tank only to have pieces randomly move over and over again. I fix it, and something else moves. It got to the point where I either had to live with the fact that this game has countless bugs that will most likely never be fixed, or else just delete the fish tank.
"Some enjoy bringing grief to others. They remind M'aiq of mudcrabs—horrible creatures, with no redeeming qualities."