Catodon federating deletes of objects it doesn't own

Hey @panos@catodon.rocks, now that I'm tracking errors encountered, I've got a bit more visibility into things that normally would've just been caught and ignored.

Today I received a Delete(Object) from Catodon associated with a user from catodon.rocks.

Two things:

1. Its object referenced an item outside of catodon.rocks, and so it failed NodeBB's actor-object match check. Normally people can't delete other peoples' posts, so I think this might be a mistake?

2. The activity's audience matches the activity's attributedTo. While you're certainly allowed to put anything you want in there, threadiverse software uses it to point to a group actor. Wondering if this was intentional.

Thanks!