KaiKimera it's probably a bug with the way we configured Discuss.
I see (through the audit log) that you created a discussion on May 30, but this discussion is now permanently deleted.
I assume this discussion was under the "test posting" tag. It's possible that when we automatically delete old discussions in that tag we don't correctly update the user profiles with the new count. We might be using a simple SQL query to delete the discussions and this skips some of Flarum's logic.
If the discussion was under a different tag, maybe there's a bug with one of the other extensions we use. Though the only extensions that I think could mess this up are the anti-spam extensions and your first post probably wasn't marked as spam (we ban all spammers so they never have second posts 😇 )
