Blocked Users Seeing and Interacting with User Posts

Hi there,

I'm not trying to get anyone in trouble, but I've blocked users who I've found annoying (and who find me annoying) and they are still somehow able to see and reply to my comments/posts, which to my understanding should not even be possible. I don't imagine they know they're doing anything wrong by doing that (because they don't know they're blocked) but this definitely seems like a bug.