This usually happens when the host application runs in parallel / ortho projection mode. The client looks like this:
While your host app looks like this:
The reason is that you host app is not running in perspective view mode. Consult the individual moreViz profile page for your app to find out how to enable perspective view mode.
After switching to perspective view mode, the geometry in the moreViz client will be shown correctly, yet it can move within the VR space, so take a good look around in your HMD to find it.
