No full screen in Google Reader for Firefox users?

I’m all beside myself right now.  One of my most used programs, Firefox, and my most used service, Google Reader, today are not cooperating, at least fully.  My main method of using Google Reader with Firefox is to hit the F11 key which sends FF into full screen mode.  I process all my feeds that way and then tap F11 again to bring things back to normal.  It worked earlier today as usual but just now I try it and the F11 key doesn’t do anything in Google Reader in Firefox.  I can use the F11 key normally in Internet Explorer but please don’t make me go back to the dark side!  For that matter the F11 key works in Firefox on every other web site except Google Reader.  Come on Google, what’s up with that?

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