Duplicated pictures with posts with embedded pictures
Friendica embeds pictures in the HTML it exports via AP and adds it to the attachments so that systems like Mastodon do display them. However, Pleroma displays both pictures. See this post: https://pirati.ca/display/ec054ce7-785e-12f1-8766-697196826465
Friendica needs to embed pictures since it is able of creating long blog posts with multiple embedded pictures that are embedded somewhere in the text.