I didn’t think that was a thing here, just muting. Haven’t seen block.
Discussion
So muting is client-side?
Why can't i see their posts then?
that is weird, unless the person deleted their account? 🤨 odd.
Shows up in Amethyst.

interesting, wonder how clients render that
I just don't see notes from anyone on that list. It's slightly confusing sometimes since I blocked someone who is a mutual follow with many people I follow, but, if something looks strange, then, I chalk it up to relays not relaying, or, in context, a person on my blocked list.
I am unsure of how Amethyst's block feature works, but I suddenly see the account in question.
I think it was a relay issue.