title: UIBarButtonItem triggers action only when pressed for long enough
body: <p>I have a few simple UIBarButtonsItems(no customization other than changing style, color and alpha). Everything was working perfectly fine for some time. But now I need to press BarButton for a long time(4-5 seconds) before the action is triggered.<br><br> I just moved toolbar around and changed color and alpha after which this started happening.  I don't exactly understand what caused this change of behavior. <br><br>
  I used interface builder to build the view and assigned action to UIBarButtonItems by Ctrl+Dragging.<br><br>
  I tried looking up a lot both on google and so. Most of the questions are about UIBarButtons not responding at all. Still I tried the solution of cleaning build of project and Xcode cache. But nothing changed.<br><br>
  Could someone help me with this?</p>