I was listening to the radio of an album of the artist Kommandant ( some obscure metal band). And the the artist itself was not on that radio. A scrolled down pretty far and no Kommandant. When I listen to artist radio I do not have this problem. This only occurs when I put the album on a playlist and than go to the radio of that playlist. When I go directly to album radio I do not have this problem.
Why is this a problem for me? I like the radio/ daily mix type of listening. I make a short playlist with four or five artists and then play that radio. That works great. But this artist never shows up when I listen like that. And it happens to be my favorite artist. Kommandant also doesnt show up in daily mixes by the way.
This happens with a few other artists too (eg the heads are zeroes). It seems like an unimportant bug but there is another weird thing. These artists do not show up in daily mixes. And that is important in my opnion. It feels like a small programming error and not as something intentional.