title: jquery ui .autocomplete() not firing when same letter entered after blur()
body: <p>Example code here: <a href="http://jsbin.com/etaziy" rel="noreferrer">http://jsbin.com/etaziy</a> (using <a href="http://jqueryui.com/demos/autocomplete/" rel="noreferrer">http://jqueryui.com/demos/autocomplete/</a>)</p>
  
  <p>If you type in a 'j' you get the 3 names, 'John' 'Jack' and 'Joe'. If you then blur away, I clear the input, just by making the inputs val(''). Then if you go back to the input, and type a 'j' again, nothing happens? It's not until you type a second matching letter that you get the popup showing. </p>
  
  <p>My example might seem a bit odd, but essentially this is a really cut back version of what I'm working on. I need to clear the input after a blur(), and clear it after a selection is made. Doing this is making subsequent selections look buggy.</p>
  
  <p>I'm partly thinking this is intended functionality, but for my purpose, its not what i want. I really need the popup with the list to show as soon as any letter is typed.</p>
  
  <p>Cheers.</p>