I just found this thread and read through the list on the first page so hope I didn't miss it but, unless I'm doing something wrong, if I have a room with two different wall coverings and I want to change one of them, holding shift down now covers the entire room not just the one type of covering I want to change. I find myself constantly having to redo my feature walls if I decide I want another wall covering on the rest of the room.
Also wall objects (which seems to include fireplaces) won't stop snapping to the walls even if you are holding down "alt". I wanted to place a toilet roll on a fence built next to the loo and had to demolish the wall first to make it place without snapping to the wall.