Can't add songs to shared playlist on Mac

This is making me crazy. Anyone figure this out yet? The only work around I have is I can add the songs on my iPhone app but on the computer it doesn't work.

I'm having the same thing happen. When the song is playing at the top of the Music app and I go to add the song from the (three dots > Add to Playlist) it doesn't show in my list of 'All Playlists'

A work around I found is, if from the top area (three dots > Show in Apple Music) find the song in the album and then click its three dots > Add to Playlist then it works.

Found a work around.

Create a new playlist and add all the song you want to it.

Then go on your phone and add the new playlist to the shared one.

Same here - any tips?