title: MapBox SDK black screen on resume
body: <p><br/>
  I am using MapBox SDK on my android application, the map onCreate appears perfectly. I can add layers and show my markers and so on.<br/>
  When the user clicks on a marker another activity is started. So I use mapView.onPause() on my onPause() method.<br/>
  The issue appears when the user tries to go back to the map activity, I am using finish() method for that and once on the map activity a black screen replaces the map and the user can no more see the map and markers.<br/>
  I figured out that the issue appears also when I lock the phone and come back to the application.<br/>
  Any ideas about how to resolve that.<br/></p>
  
  <p>thank you very much.</p>