@jupiter_rowland@hub.netzgemeinde.eu if you're seeing Hubzilla backfill "bit by bit" it is likely doing inReplyTo traversal, which is what NodeBB does if it cannot find a resolvable context.
@david@weaknotes.com in what way, that the category is cleared out regularly? I think that happens often already with users auto-deleting their posts.
https://activitypub.academy is another example of a test instance that is regularly cleared.
Either way I take no offense if try.nodebb.org gets blocked here and there
@freamon thanks! Happy to look into handling Create(ChatMessage)... I think the error aside, NodeBB would drop it anyway since ChatMessage isn't an expected post type.