I've noticed that the drones sometimes don't bring back a building when deconstructing, and just leave it on the ground (seems to only happen when the building contains a lot of items). This isn't a big deal, but would be nice if it can be fixed.
But the bigger problem is when you place a ghost over the dropped items, then the drones will build the ghost and attempt to insert the items into it, and if they fail, the items get destroyed.
Screenshots demonstrating the dropping of items when deconstructing: https://imgur.com/a/GK9qUy9
Screenshots demonstrating the destroying of items: https://imgur.com/a/reRhCOS