title: Autolayout ignores UITabBar (content under the bar) on iOS7
body: <p>I've set UITabBar as Opaque in Storyboard, but i still seems to be transulcent. When I set my custom UITabBarController with <code>setBarStyle</code> there is only OpaqueBlack availible.</p>
  
  <p>But that the least of the problem. No matter what I do, content of my view gets positioned under the tab bar, like it ignored by ayutolayout. On Storyboard everything looks fine. something messes up in the runtime?</p>
  
  <p>Oh the most important thing. The problem occurs on iOS7 only!</p>
  
  <p>Here are my ViewController settings in storyboard:</p>
  
  <p><img src="https://i.stack.imgur.com/6gV0s.png" alt="enter image description here"></p>
  
  <p>And here is problematic content (UITableView) which gets positioned under the UITabBar on ios7 app. Looks fine in storyboard though:</p>
  
  <p><img src="https://i.stack.imgur.com/5tcxC.png" alt="enter image description here"></p>
  
  <p>And finally UITableView constraints:</p>
  
  <p><img src="https://i.stack.imgur.com/QACzL.png" alt="enter image description here"></p>