title: Autocompletion in Qt Creator is not working
body: <p>Autocompletion in my installation of Qt Creator is not longer working. I have "Activate Completion" set to "Always" however it doesn't work, even when I press Control + Space.</p>
  
  <p>It used to work fine though, so I don't know why it suddenly stopped. Does anybody know what could be the reason?</p>