title: Android studio 3.2.1 Layout editor preview disappearing when a tab is closed
body: <p>I am using Android Studio 3.2.1 and when I close a tab that is not the current one, the content of the preview window simply disappears, e.g.</p>
  
  <p>Preview to close "Cupon" tab
  <a href="https://i.stack.imgur.com/qPdjw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qPdjw.png" alt="Normal"></a></p>
  
  <p>After close "Cupon" tab
  <a href="https://i.stack.imgur.com/jsq0m.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jsq0m.png" alt="enter image description here"></a></p>