How to exit full screen mode in textedit FORMAT WINDOW mac 10.13.3 can't exit full screen in the FORMAT WINDOW for textedit  mac 10.13.3
Have tried restoring default settings.  The top left buttons: red closes window as it should, orange is not active (the regularly orange button is just gray) and green button does nothing.
Try pressing the Escape key. I know in Finder hitting Esc will get you out of full screen mode. But not every app supports Escape as a way to get out of full screen mode so you can try this keyboard stroke:

"Command+Control+F" to exit or enter Full Screen Mode.