Mirror Shader that works on Quest?

Anyone found a working solution yet? The one with HTC stereo rendering toolkit somewhat works when you enable the OVR keyword, but the resulting image is not what it should be. It's like looking at yourself cross-eyed. When I close my left eye and look at the image I see it way to the left from where it is supposed to be and correspondingly. when closing the right eye, the image is way to the right.