title: CoordinatorLayout rendering issue in Android Studio
body: <p>I was trying out <strong>Android Studio</strong>. Upon creating a new project, The auto generated <em>xml</em> has a <em>CoordinatorLayout</em> as root. But my <em>xml</em> preview just does not render. It builds OK and also renders if I comment out the <em>CoordinatorLayout</em>.</p>
  
  <p><a href="https://i.stack.imgur.com/D2YeB.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/D2YeB.jpg" alt="enter image description here"></a></p>
  
  <p>And this is when I turn on "<em>preview android versions</em>" :</p>
  
  <p><a href="https://i.stack.imgur.com/rhsKM.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/rhsKM.jpg" alt="enter image description here"></a></p>
  
  <p>There are no error messages shown too. So I have absolutely no idea what's going on. What do ya think?</p>