Objects with physics enabled do not show up in 4.7 preview 2 (when upgraded form 4.6)

After upgrading from 4.6 to 4.7 preview 2 objects that are set to simulate physics will not show up if the user uses the mobile preview.

1. Open grade a 4.6 project (with starter content) to 4.7 preview 2
2. Place a sphere into the level
3. Check simulate physics
   The check box is under physics in the details panel of the object
4. Select play Mobile preview