What does blocking someone actually do?

What does blocking on kbin actually do? I’m asking because it seems incomplete, to put it mildly. If you block someone, they can still see what you post and reply to you and you’re still sent notifications of their replies, even though you can’t see the comment itself (or any replies other people make to comments of an account you blocked). Plus, I blocked someone who was spent the last day downvoting literally every comment and post I make, and they’re still able to see and downvote my replies and posts. So what exactly is the point of blocking, if it doesn’t actually block people? Is this something that’s going to be fixed in the future?

EDIT: Oh, hey, the irony, the person I blocked was able to see and downvote this post. Which just proves my point, I suppose - block is either busted or what it actually is for needs a lot of clarification.