Closing Curvature Tool Path in Illustrator 2020 on macOS Catalina?

I’m running Illustrator 2020 on a Mac with Catalina.  I’d like to draw a closed path with the Curvature Tool.  When I bring the cursor back to the starting point, the little circle appears as expected but when I click on the starting point, the curve doesn’t close. If I hover over the anchor point, the cursor changes to a crosshair shape briefly but the Curvature Tool just wants to continue with the curve.

I’ve tried adjusting the selection tolerance and rubber-banding options, but nothing allows me to close the loop as simply as the tutorials portray.  Does anyone have an ideas how I can get the Curvature Tool to perform correctly again?

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