by Quade » Sat Jan 18, 2014 7:51 pm
Make sure the lock isn't clicked on the toolbar.
Then click on the tab itself. I mean the little extension of the window that looks like a tab. Drag the tab to the left border and you should see a little icon appear about 1/2 way from the top and bottom. Drop the tab on this icon.
I have my groups tab set to "auto-hide" too.