A friend's button press is replayed only when they stand near the button (a report naming a far-away switch is refused).
An NPC run by a friend is given a piece of gear only when it lacks it; every gear update used to add another copy, so inventories grew and unique items were duplicated.
A settlement piece whose workbench is not loaded waits instead of landing in whatever cell you are in.
Text from other players shown on the HUD loses control characters and markup.
A replayed burst still following a friend's stand-in is ended before the stand-in is removed.
Host: quest stage bookkeeping no longer walks the whole list per event.