To me the normal issue seems to be related to the red and green channels, and/or gamma. There is a little tip here by Vlado, which should give you a hint. It seems the Corona version is the correct one, but I think it can be fixed.
If you could share the scene I could help you out.
Also, do you have any issues with the glass in this particular setup? Looks good to me!
I had to flip the Green channel to get correct. Played with both gamma and channels, still get weird results. Let me package the scene it's about 500MB. Glass no, in Vray I always do reflect back side and turn up the reflection/refraction depth to 25. I do notice sometimes that the glass doesn't behave correctly still, but then all of a sudden it will render correctly, almost like a bug or something, but it's random.
Attached is something interesting, render comparing Corona and Redshift.
Corona render: 26min 36sec, was only maybe 1/4th done with rendering so expect 1-1.5 hours render. But Corona also ran out of Ram gave me info about needing more ram in pop-up message.
Redshift render: 5min 44sec, Render was complete. Had no message or issue with Ram let alone Vram.