I don’t know if it’s a bug or if the feature hasn’t been implemented because the “Show Fediverse Address” option doesn’t seem to do anything.

It would be good to see the communities’ instances like this: politics@lemmy.ml. I’ve joined several communities with the same name on different instances (e.g. politics@lemmy.ml, politics@lemmy.world) and it will be good to know which one I’m looking at.

As for users, perhaps have an option to display the instance of the user.