Placed clutter seems to stay where I put it mostly, instead of falling through tables/objects. Settlers occasionally knock stuff down but its far better than it was. Still really aggravated with permanent/respawning corpses like the dog/raider at the entrance to Sanctuary, or the dead ghouls in the Sunshine co-op just to name a couple. There are many more. A way to remove corpses, ash piles, skeletons from settlements would be such a boon.