title: GameObject.Find() works in editor, but returns null in build
body: <p>I'm currently using <code>GameObject.Find()</code> to retrieve an object generated by the Mapbox Unity SDK. The code works fine in the editor, but when I build the project it returns null. The offending code is the following:</p>
  
  <pre><code>GameObject go = GameObject.Find ("16/32699/21126");
  if(go != null) {
      //do the thing
  } else {
      Debug.Log("the tile doesn't exist");
  }
  </code></pre>
  
  <p>I've tried building in both WebGL and Native OSX, both with the same result.</p>
  
  <p>in the editor, the exact name of the object I'm looking for in the scene hierarchy is <code>16/32699/21126</code>. I appreciate that using the forward slash is how you search for sub-children in unity, but it seemed to work fine in the editor.</p>
  
  <p>below is a screenshot of the scene hierarchy.</p>
  
  <p><a href="https://i.stack.imgur.com/slQye.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/slQye.png" alt="scene hierarchy"></a></p>
  
  <p>The behaviour script is attached to the <code>Map</code> object.</p>
  
  <p>Do you know what could be causing this, or if there is another way of searching for the object I'm after? </p>