I've noticed that the Deezer Mac application doesn't send a song image to the native macOS player.
All the other applications do it, and I think it's pretty cool to see what I'm listening to in the control center. Instead, I just have the Deezer logo. I like it, but I would prefer to see my music !
I’m not sure, but I think that it is the same in the Windows app.
Also, if I use Deezer with my browser I have the song image
Deezer, can you fix this please ! It’s a small detail, but I would love to see it !!
You're just a few details and bugs away from Spotify !
Good luck and continue this way ! 
