1. What happened
The culling frustum for the left eye with native OpenVR support appears too aggressive, culling objects that should be visible.

2. How we can reproduce it using the example you attached
With a Vive headset, open the project, launch SteamVR, and enable "Display Mirror" in the SteamVR drop down menu.
Open "Main Scene.unity"
Press play
Sweep the headset left and right. In the mirror view, on the left edge of the left eye, you will see some of the renderables popping out of view prematurely.