Undo activities should inline their objects
This is more of a Mastodon bug than a Pleroma one, really, but Pleroma should inline objects in its Undo
activities.
Indeed, Mastodon does not maintain an index of known object identifiers (some object types have an index, not all of them), and discriminates against the type
of the Undo
ed object. Given Mastodon's architecture and the cost of creating new indexes, doing otherwise would be somewhat unreasonable for Mastodon.
For compatibility reasons, Pleroma should inline the Undo
ed objects.