Minimize and close out buttons disappear in full screen mode

I was following this discussion and it is old so would not let me reply without restarting it. I discovered that if you double click where the menu bar should be it will flash the menu bar up and then you can select View and remove the check by enter full screen. Looks like the shortcut to get back to actual size is Command 0 or O. I will try that next time. I am hoping I can find this post when it happens to me again and I forget what I did to get back. LOL