I'm guessing this won't be a common problem but there's at least one case where there is a user (Yi) who is registered using just a single name, which overrides an attempt to @mention another user (Yi Zhang). I won't tag them again here but you can see the problem on this answer.
I've tried a few obvious things like replacing the space with an underscore, a hyphen, removing the space, but none of those work. Is there a way of using markdown to avoid this problem or is this something that needs to be fixed behind the scenes?
