The Multiscatter GGX code was missing the same-side checks for incoming and outgoing directions w.r.t. to shading and geometry normal. Should not be needed for the Glass variant since it intentionally has both reflection and transmission.
The Multiscatter GGX code was missing the same-side checks for incoming and outgoing directions w.r.t. to shading and geometry normal. Should not be needed for the Glass variant since it intentionally has both reflection and transmission.