A quick tip for anyone getting the “only rendering in left eye despite Mobile HDR being turned off” bug, check to see that you have static lighting turned on under Project Settings -> Engine -> Rendering -> Allow Static Lighting. Also make sure the checkbox is NOT checked at World Settings-> Lightmass -> Advanced -> Force No Precomputed Lighting.
I was getting that problem with static lighting completely disabled. My guess is the renderer has no idea what to do in this situation and craps out. Be sure to restart the editor after changing these settings. Running fine now with Mobile HDR off! I’m on a build compiled from source at the 4.7.1 tag.