Update....37 minutes after my original post. I decided to go ahead and reboot my laptop. When I opened Paint.net again, the drop-down menus were back to their expected size.
Issue resolved (?)
Dan Mach
Just updated to version 4.2.14. When I opened it to try and use it, the text size of the drop-down menus is tiny. I've attached a screenshot. Any thoughts on how to resolve this?