title: Reticle not detecting button
body: <p>I have 4 buttons (called 'paintings' here) and I need the gvr reticle to be able to click on each. The funny thing is, the reticle works on three of the buttons, just not the 'south' one.
  <a href="https://i.stack.imgur.com/OHJqx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OHJqx.png" alt="enter image description here"></a></p>
  
  <p>My FirstPersonCharacter has a Main Camera with the GvrReticle.</p>
  
  <p><a href="https://i.stack.imgur.com/sP1FG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sP1FG.png" alt="enter image description here"></a></p>
  
  <p>Things I've tried: </p>
  
  <ul>
  <li>deleting my existing south button and replacing it with a duplicate of one of the working buttons</li>
  <li>disabling the other 3 buttons</li>
  <li>moving the canvas and button off the wall</li>
  </ul>
  
  <p>All of the painting-buttons come from the same prefab and I didn't make any changes to the south one, so I don't think the problem is with the painting-button itself. </p>
  
  <p>Let me know if there's more information I can provide to help pinpoint the issue!</p>