title: Unity3D + Google Cardboard SDK = No UI masking
body: <p>UI mask do not work with Google's Cardboard SDK? It works properly with the Oculus Mobile VR plugin but with the Cardboard SDK the masks seem to be gone.</p>
  
  <p><a href="http://postimg.org/image/b2by7exu9/" rel="nofollow">http://postimg.org/image/b2by7exu9/</a></p>
  
  <p>This screenshot demonstrates it, outside of the white box we should not see any text. </p>
  
  <p><a href="http://postimg.org/image/ts8wgfu7l/" rel="nofollow">http://postimg.org/image/ts8wgfu7l/</a></p>
  
  <p>In editor and with VR Mode disabled it looks fine.</p>
  
  <ul>
  <li>Did anybody encounter this issue and know how fix?</li>
  <li>In which direction should I investigate further?</li>
  </ul>
  
  <p>I already tried the builds on Note 4 and Galaxy S3 with two different projects just to be sure. Logs didn't show striking lines. I googled and did not found anything related to this issue. Answers and forums the same.</p>
  
  <p>Any suggestions highly appreciated!</p>