@fwc @sneeden Private posts work differently in Mitra and Pleroma:
- Mitra doesn't show partial threads. Pleroma displays partial threads and converts replies with invisible parent into top-level posts.
- Mitra enforces conversation scope. Pleroma and Mastodon don't seem to respect conversation scope at all, so it's possible to reply with a public post to a followers-only post, or add more people to an existing DM conversation. They also generate replies with wrong audience in followers-only conversations.
So the interoperability is limited, but I think Pleroma and Mastodon are broken and I don't want to copy their flaws