Is it very common?
Normally deaf buns startle quite easily as they don't hear you enter the room and then jump when they suddenly see you.
I always find if they don't react when I'm hoovering then they normally turn out to be deaf
I have a mini-lop that scans & usually completely ignores me when I walk in a room. I've been known to "prod" her before now She's really friendly though, & apart from having to wave my arm frantically in front of her face, to make sure she knows it's feed time:roll:, there's no problems:lol: