How can I correct the screen going blank whenever I run nettop? I'm running the latest version of macOS and always just use Terminal. Not iTerm or anything like that.

Whenever I run nettop, the screen goes blank. Sometimes it happens immediately, and sometimes after I press an arrow key.

How do I keep this from happening?

I just tried r to redraw the screen, but that didn't help.
Try to make your terminal screen bigger. It fixed mine!