MP3 tags do not appear on playlists

I'm experiencing the following issue with Deezer in a web browser. I was able to reproduce it in Firefox, Chrome, and Edge, all on Windows. I contacted support, but the chatbot keeps insisting it's a cookie-related issue. Can anyone else reproduce this?

• I open the Deezer website.

• I go to the "My MP3s" page: the artist names are displayed for every track.

• I open a playlist that contains one of my MP3s: the artist name is missing for that track.

• I go back to the "My MP3s" page: the artist name is now also missing for the track that appears in the playlist I just viewed.

• I refresh the page with F5: the artist name appears again on the "My MP3s" page.