I played with a friend on a local only server and I built some hay walls, and then attacked them so they can be walked over. I could walk over them no problem but my friend who was the host could not. They were acting as if they were solid. When she made the walls herself and destroyed them she could walk over them and I could walk over them too but after we quit the server and started it up again she can't walk over them anymore while I can walk over any destroyed walls.
local only server non-host builds hay walls and then destroys them host tries to walk over them - doesn't work host makes the walls and destroyes them - works after disconnecting and reconnecting to server no longer works even with host made walls