I just started using the LaTeX community (!tex@lemmy.sdfeu.org). Sad to see it go.
update
Just noticed it’s back up, but there are no communities. That’s bizarre. So if someone not on lemmy.sdfeu.org were to post to !tex@lemmy.sdfeu.org, I guess it’d still be like a ghost node because the post would have nowhere to go on the hosting node.
I’m not sure what that is. vger.social and voyager.lemmy.ml don’t seem to have anything relevant. But I found !tex_typesetting@lemmy.sdf.org.
Your client would make a difference. What you are probably seeing is the mirrored version of !tex@lemmy.sdfeu.org on lemm.ee. You cannot possibly be interacting with a non-existent community. If I post to https://linkage.ds8.zone/c/tex@lemmy.sdfeu.org, then I don’t suppose you would see it on https://lemm.ee/c/tex@lemmy.sdfeu.org.
(edit) just saw your test msg. Well, that’s interesting. Even though !tex@lemmy.sdfeu.org no longer exists, it seems the mirrored versions of it can still collaborate. I’m not sure how that works.