How can I access Apple Music content from the macOS Music app?

I have a subscription to Apple Music and have no trouble accessing it using the web interface, but nothing related to it shows up in the Music app on macOS. When I click on the Search field, only two options appear on the right side, Your Library and iTunes Store. The Apple Music option is not shown.

The Account menu shows me as signed in.

This is a long running problem. I have had an Apple Music subscription for over a year, but it has never worked in the Music app.

Before anyone tells me to enable Sync Library, I have no desire to do that and I don't see any connection between that feature and accessing Apple Music. My issue has nothing to do with purchased or downloaded music.