I have many artists indicated as Favorites in Qobuz that do not show up as a Favorite Artist in the Roon Qobuz implementation.
I use Roon Rock OS on a Intel NUC.
Samsung phone and tablet as controllers for accessing Roon.
One example for simplicity sake:
Diana Krall is marked as a favorite in Qobuz.
I have many Diana Krall albums in my library.
When I look in My Qobuz in Roon, and go to Favorite Artists, Diana Krall is not listed.
I have many more examples of the same favorite artists issue that don’t show as favorites in Roon.