Is there a solution for this?
Hi, Spotify currently does not have a way to automatically separate artists. There's an idea to fix this currently under consideration you can add kudos to here.
If you want to report general metadata issues, please contact the Spotify content team directly from here: https://www.spotify.com/us/about-us/contact/contact-spotify-support/ Select 'Give Spotify Feedback About Something' and then 'Report Inaccurate Song Info'
You can also post details of mulitple artists appearing on the same page here.