Target Eye = None not working when Oculus connected

Hi devs,

Recently our main display (Target Eye = None) have stopped working, when having the Oculus connected. Instead Unity just mirrors what the Oculus is seeing on the screen.

We have setup both a camera for the Oculus (Target Eye = Both) and one for the main Display (Target Eye = None), but for some reason we only see what the Oculus sees, as long as it is connected, and only sees image from the main camera when the Oculus is not connected. We tried to setup a completely empty scene, just to verify that this is not caused by our code.

This used to work, but last time we tested was in an earlier version 5.3 (where the feature was added) have anyone else experienced this error?