Pen tilt does not work in Photoshop 21.2.2 with Microsoft Surface Pro 6

I have a Microsoft Surface Pro 6, and the Microsoft stylus, which has pen tilt functionality.

Various pages I've read on the internet indicate that Photoshop should support pen tilt. However, any attempt I make to ebable pen tilt in any parameter for a brush, I get a warning icon (small triangle with an exclamation point inside), and tilting my pen doesn't seem to do anything.

My goal is to have a pencil where tilting the pen creates a stroke similar to drawing with the side of a pencil, as close as possible to a real world pencil. Other apps, such as Microsoft One Note do this, so I'm hoping Photoshop, which should be a more robust drawing program than a note app, will be able to do this as well.

Any suggestions on how I can make use of my pen tilt function in Photoshop would be greatly appreciated. Thanks!