Preview annotation bug? Can't move a shape after it has been resized.

In the past I've been able to add a star shape to a photo in order to hide someone's identity in a photo being added to a web page. Today I found that after I'd pasted the shape and adjusted its size to fit the person's face I could no longer move it into position. I could reselect the shape and the blue handles appeared but I couldn't move it with either a mouse or the arrow keys. I tried selecting it with Command, Option, and Control keys depressed. I had the same trouble using JPEG and PNG files and I tried restarting the computer after I'd unplugged everything and held the power button down for 15 seconds.

Is anyone else experiencing the same restriction and has anyone resolved the matter?

Ventura 13.0