title: Misaligned bottom tab icons iOS7
body: <p>I'm building a tabBarController and adding some subviews in it, here is what I get:</p>
  
  <p>On iOS7 the tabBarItem appears misaligned
  <img src="https://i.stack.imgur.com/Td4i0.png" alt="enter image description here">
  Until I do click on one of them which realigned each tab
  <img src="https://i.stack.imgur.com/8nCK5.png" alt="enter image description here">
  This do not appears on iOS6, have you experienced a similar behaviour already and what is the solution / workaround you found to fix it ?</p>