When in VR preview the right eye is solid black.
This has been reproduced on multiple machines using both the Oculus and HTC Vive.
The same effect is also achieved when running -emulatestereo
Edit 01-23-2017 PatrickD-
Working: //UE4/Release-4.15 CL-3259011
Broken: //UE4/Release-4.15 CL-3260538
Expected Result: Everything renders correctly in both eyes
Actual Result: Everything renders in left eye but only renders in black in the right eye
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-40900 in the post.