title: Implicit Constraint iPhone Portrait Screen Height
body: <p>I tried to create a custom freefrom view with interface builder.
  I have a UIView which is containing a UIImageView and UILabel.
  I set the constraints to adjusting the Label according to the Image etc and a margin to the superview.</p>
  
  <p>Now I want the superview to exactly fit the subviews. But when I press Editor -> Size To Fit Content, the superview is not resized completely and the constrains are in conflict. What there appears is a implicit constraint ("iPhone Portrait Screen Height"), which can not be altered/deleted. See Screenshot below:</p>
  
  <p><img src="https://i.stack.imgur.com/1mKfB.png" alt="enter image description here"></p>