You haven't noticed it in the past because it wasn't there. That isn't a pane in jsfiddle, it's the result of the 'firebug-lite-dev.js' external script being i

You haven't noticed it in the past because it wasn't there. That isn't a pane in jsfiddle, it's the result of the 'firebug-lite-dev.js' external script being included in the jsfiddle.