iOS 15.1 (19B74)
When I klick on a Spotifty link open.spotify.something (See attachment SafariError.jpg) in the Facebok app it opens Safari and gives an error "safari can't open the page because server cannot be found" then in the bottom it says track (or playlist if it was a playlist link) I've posted a full link example in the bottom.
If the link has a preview it kind of works (See attachmentt WithPreviewKindOfWorks.jpg). Then it opens Facebooks embedded Spotify player then I can click on the spotify icon and choose open in Spotify. Not a fan of the embedded player that's why I say kind of works. Would like to go back to old preview function but that's another story.
If I manage to copy the link then I can search for it in spotify and find the track or playlist. Or I can paste it in notes and click on it there, then it works.
I used to have the problem when it opened up Appstore telling med to download the Spotify app and got stuck in a loop. Like this post https://community.spotify.com/t5/Ongoing-Issues/iOS-App-closes-and-redirects-to-Safari/idi-p/5287680 but that's not the issue anymore, from instagram stories it works. And on the phone if I log on to Facebook on the webclient (Safari) the links work.
I've done a clean re-install of both Facebook and Spotify apps that doesn't help. And I have several friends who has the exact problem. So it's not just my account or unit.
As I write this I understand it seems like a Facebook App on iOS problem (it works for my friends with Android units). But if you can't share music and playlists it takes away a lot from the Spotify experience. So hopefully you can help me fix this.