I have a multi-language playlist (in my case its English, Hebrew, and Spanish).
However, when I play playlist radio or try to get recommendations on what to add to the playlist, I only get songs in Hebrew. Usually, even those are from a very specific genre.
I would assume that there will be a higher weight to the latest added songs -but no.
It's very disappointing since the only way for me to listen to a mixed playlist is by creating my own...