I'd seen before that you can still see the creation of a new thread by someone who has blocked you, and reply to it, but not see anything of theirs in it except the thread creation post.
This is the first time I've seen that you can see a person who has blocked you's icon and name on the right side of the community > new post page when they are the last post.
This is the first time I've seen that you can see a person who has blocked you's icon and name on the right side of the community > new post page when they are the last post.