I have continually experienced that problem. I found that "my" problem was due to my mouse. It was extremely difficult to get the delete menu to come up. I found that pressing the mouse button hard from a different angle would finally work.

I just found out that a much easier way to delete an individual note in my 2020 BIAB is to hold down the delete key on the keyboard and then simply click on the note. Voila! and poof. The note is gone.

What I am having extreme difficulty with, and have found no solution that works for me, is: deleting several or multiple notes at a time. Nothing recommended works. Suggestions?