title: Shared element return / reenter transition broken after configuration change
body: <p>I have activity A and B, with a shared element transition, which works just fine, until:</p>
  
  <ol>
  <li>transition from A -> B in portrait orientation</li>
  <li>in B, change orientation to landscape</li>
  <li>hit back</li>
  <li>the shared element doesn't know where to return, it just floats there stupidly in its place until the reenter transition finishes, then disappears</li>
  </ol>
  
  <p>This looks awkward. I understand this is because originally the shared element was connected to the portrait landscape of A, and not to the landscape one. Can anything be done to alleviate the pain?</p>
  
  <p>I checked the Google Play store app with the exact same scenario as described above, selecting an app from a list, then going back to the list after an orientation change. It seems to just pop back to the list without any animation, but that is already a lot better, as there's at least no broken transition and floating elements. What is the way to achieve this behavior?</p>
  
  <p><br>
  <strong>UPDATE</strong>: Just to make it clear, the following scenario works <em>perfectly fine</em>:</p>
  
  <ol>
  <li>transition from A -> B in portrait orientation</li>
  <li>in B, change orientation to landscape</li>
  <li>change orientation again, back to portrait</li>
  <li>hit back</li>
  <li>the shared element does its job perfectly and returns to A</li>
  </ol>
  
  <p>So this is not the case where the view doesn't survive configuration changes.</p>