title: Unity ScriptableObject is missing on mobile build
body: <p>I have a <code>MonoBehaviour</code> class that has a property referencing another class which is <code>ScriptableObject</code>.</p>
  
  <p>I've created several prefabs of my first class and created several <code>ScriptableObjects</code> of my second class, I've referenced them in the first class respectively.</p>
  
  <p>In the editor everything works fine, except sometimes my so are shown in the Inspector as Missing Script and in property reference as <code>NameOfSO ()</code>, don't know what causing this, but again, Play in the Editor is working just fine.</p>
  
  <p>If build my game for Android and connect to the Debug, to see what's going on, I can clearly see, that's <code>ScriptableObject</code> reference is <code>null</code>. Why? Don't know, came here to ask a question.</p>
  
  <p>Thanks!</p>