According to this answerthis answer, the editor was previously not fetched for answers (not sure if this was the case at that time), and this answerthis answer says that previously any user that returned nil
would be erroneously attributed to "Community". So I assume the post was incorrectly trying to attribute the editor and failing.
Both of those situations have now changed (editors are always shown with the new style attributionnew style attribution, and users can now return nil
), so this is no longer an issue.