title: UISearchbar scope is hidden behind the search text zone after adding constraint
body: <p>I've come up against a problem I cannot sort out. I have a nib file where I added a table view and a UISearchbar with a scope bar. Everything was working perfectly until I added constraints to all the views (tableview, searchbar, a few labels and buttons). Since that moment, I cannot see the scope bar anymore. It seems to be hidden behind the searchbar because I can see a kind of blue surrounding the search area where text is entered (see below):</p>
  
  <p><a href="https://i.stack.imgur.com/px1FB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/px1FB.png" alt="enter image description here"></a>
  Does anyone have already been facing this problem?</p>
  
  <p><strong>EDIT</strong>:
  This is the image with the constraints mentioned as a possible issue:</p>
  
  <p><a href="https://i.stack.imgur.com/Rt9Vs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Rt9Vs.png" alt="enter image description here"></a></p>