Apple music playlists in the "New" tab aren't all showing up on the desktop app.

I'm not seeing all of the "Activity Playlists" that are available under the New tab.

For example, if I click on "Activity Playlists" under new, and then choose one of the categories (say "Cooking"), I only see 7 playlists. On my iDevices, I see a long list, 20 or more. This is the case for all categories under "Activity Playlists". I never see more than seven playlists.

How can I fix this?