Getting Kicked out of Game

I have a strange issue. I'm currently getting kicked out of my game (and into Oculus Home), when loading new scenes within Unity.

My game continues to run, but I can only see Oculus Home in the headset.

I'm using Unity 2017.4.24f.

I'm not sure of the Oculus SDK....as I haven't updated it in a while (I'm using a third party tool (VRTK) that integrates into the Oculus SDK 
I did notice that the file OVRBuild states SDK 3.4.1..not sure if that is how to accurately check.

Note: This happens sometimes...which makes it strange.