Playlist and Library conflict with Apple Music

Hello,

I have a weird issue with Apple Music cloud sync.

I use Apple Music for both streaming new songs and sync my own library with cloud sync. Basically what i do is listen to new albums with streaming, put the songs/albums i like in playlists. Then once every few monthes i buy some albums and add them to my own library because i prefer to have physically the songs.

The issue i have is that if Apple Music find an equivalent of my new files already in some of my playlists, it won't let me add these ones to my library (it's shown in the songs list when added but disappears quickly after the cloud synchronizes).

If i put these songs to my library and remove them right before sync, then i can add them correctly the next time, but this time the songs disappear from my playlists !

So i can't use correctly the playlist and library function because they enter in conflict.

I tried to disconnect and deactivate/reactivate cloud sync without change. This is very annoying and i'm starting to regret using Apple Music (i chose AM because of the ability to have both library and streaming in same app...)

Thanks