2 issues:

1) For a query analyzer window, right click on a tab and choose "Floating". Notice that you can't start typing directly into the query window. The focus is some other place (unclear where it is). One has to click inside the query analyzer window or press tab to get the focus inside the window

2) My focus is inside the query analyzer window. I Ctrl + ] to see a list of tabs. I then press the Esc key. My focus is no longer inside the query analyzer window content. I need to click inside the window so I can start typing again.