@helpers maybe you guys are also interested.
I opened a ticket also on github: https://github.com/friendica/friendica/issues/14692
I'm not sure it's an actual bug, more of a support request really, but I would appreciate any kind of clue about what's happening.
My assumption is that my server returns something weird with respect to caching or the ActivityPub payload that gets the friendica client confused.
I'll try to add some mitigations on my side too. 🙇