I know I'm not adding anything useful to the discussion, and I certainly don't want to hijack the thread, but I've been playing with OR running from within the now-defunct TriDef 3D application (red/blue glasses, or active shutter glasses on my 3D television). I noticed this stopped working with the 1.5.x version of OR, and also the Monogame version. The 1.4.x version still works in TriDef.
I'm guessing that the change being discussed (shaders?) is what made TriDef stop loading OR? It's not deal-breaker for me, just an interesting observation.