title: Xcode - How reliable is the Assistant Editor Preview when viewing layouts for different screen sizes?
body: <p>The layouts being displayed in Assistant Editor Preview do not seem to be correct according to the constraints provided in storyboard. Also, I've noticed some weird behavior with the Assistant Editor Preview screen. If I have a 4 inch screen displayed in the Assistant Editor Preview with the layout properly displayed on it, if I add another screen size to the preview, it slightly changes the layout of the 4 inch screen which causes it to be incorrect. This change occurs without me even touching anything in Storyboard. All I do is add another screen size and suddenly everything is out of whack. </p>
  
  <p>Can I correct this behavior? Should I not worry about what is displayed in Assistant Editor Preview so much?</p>