title: android app crashes after permission disabling on API 23
body: <p>My app uses permissions </p>
  
  <p>in app i'm asking <strong>runtime permission</strong> and it <strong>works fine</strong></p>
  
  <p><strong>BUT</strong> when doing this steps </p>
  
  <pre><code> 1) using device home button going to current app settings page
  
   2) switching off permission
  
   3)then going back to app again with home button
  </code></pre>
  
  <p>it <strong>crashes without any exception</strong></p>
  
  <p>for exmaple <strong>INSTAGRAM</strong>  app </p>
  
  <pre><code>1) open instagram 
  
  2) goto settings page
  
  3) switch permission 
  
  4)return to app
  </code></pre>
  
  <p>it restarts, i want to do  something like that</p>