I can't get my LG Stylo 4 mini screen to go back full size. Any remedies?

[Android Central Question]

I was watching a You Tube on new features of my new Stylo 4. It showed how to go to mini screen so I tried it. It shows an X to get out of that mode. However, my screen does not display an X. Some of the keys are non-functioning, i.e. I can't restart or power off the phone.

 

[methodman89]

Have you tried swiping to from the corners? Double tapped the screen?