@kraft I see! It should look the same, there are some times issues, with how you add the image. I am currently looking for post_thumbnails and attachments. I think I have to rewrite the code to parse the content for images (trying to ignore icons and emojis). You can debug the activity-object by adding `/activitypub` to the end of a post URL:
@kraft to have it properly federated as "media" post, you have to check the attachments. it might have been an issue, that you had it as an image first (not an attachment) and changed it to a featured image afterwards and the update activity was not sent properly (have to check that!)