I only listen to classical music. So far, at the end of an album, Roon radio suggests some music of the same kind. Today, it systematically goes with Chinese or Asian music (not traditional, but looks like contemporary singers). What happens?
In fact, before doing anything, I looked at my history in Roon and found that it was empty. I do not know how Roon Radio works, but if its algorithm is based on the complete history, it could explain the issue. It kept only my last listening (the Four Seasons, by Vivaldi), and the following music by Roon Radio was Asian but with nature sounds… reference to the Four Seasons?
After I reset my laptop, I went directly through the update of the Roon server SW, and during the upgrade, it mentioned that my database was under reconstruction. And I saw right after that I had an entire history reconstructed again, and Roon radio worked adequately again.
It means the problem is solved. But I am not sure I have the right explanation. Nevertheless, it could make sense to check your history when having a Roon Radio with strange proposals.