Where did my Finder menus go?

Question

I am on OS Version 10.10.1 (14B25).  Whenever I click on the green dot in the upper left corner of an open window, the window expands to take up the entire Desktop.  Even more bothersome, the window expands to the top of the frame, covering up the Finder menus.
I need those menus.  I have found by experimentation that waving the cursor around in the upper-left corner of the display can bring the Finder menus back into view.  But that is only temporary.  As soon as I move the cursor back to the content of the window, I lose the Finder menus again.  The only way I can get the Finder menus to remain visible is to close the window that I am working in.  Doing so defeats the whole purpose in clicking the green dot.  
Is there some preference somewhere that I can use to turn off this annoying new feature of Yosemite?

Answer 1

Press esc key to get out of the full window
Alternatively
press option + green dot to resize a window to your needs
PS If you look closely right before you click on the green dot that it changes to reveal two arrows tips, pointing outwards, so it does what it says it is going to do, expand to maximum size.
Image from OS X daily