title: Combobox Autocomplete Tab-out does not select item
body: <p>So there are a bunch of questions similar to mine, but none exactly what I need.
  I have a combobox that is populated with a list of cities. I turned on the Autocomplete and that works exactly how i want with the suggestappend also turned on. The problem is, though, if the user tries to tab out of the combo box, it does not actually select the item. here is an example:
  I am searching for "Orlando". If i type in "orla", the suggestion fills out the rest of the word (selected), so it shows "orlando". So that is the item I want to select. If i hit enter and then tab out, it will select the item and then tab out. What i need though, is for tabbing out to select the underlying item that matches the word. 
  If i need to explain more, I can.
  Thanks in advance!</p>
  
  <p>Luke</p>