Please disregard…. the following…. Turns out my isssue is with navidrome. The shared lists are owned by another user. When I change the owner of the shared list it syncs as expected.
I am using Navidrome: v0.60.2 api: v1.16.1 and Symfonium V13.7.0. I am having the same issue as above. My navidrome server is https://domain.tld/music/. The certificate is a valid trough letsencrypt. I can import a public playlist, but cannot push the list to the server. The favourites do sync as do personal playlists.
Sync Manager says all is successful though.