Volumetrics behind glass arent working in Cycles Im currently trying to render a scene in Blender 2.8 with Cycles out of the inside of a car. The side and windows are all basic BSDF Glass Shader. Outside of the car is a cube with a basic BSDF Principled Volume Shader. But whenever I place my camera inside the car, the volume is not visible in viewport as well as in the render.
I'm not sure what you mean by "the volume is not visible": is it black or is it just as if it wasn't there? (A screenshot would help)

If the problem happens only from behind a transparent surface, you may have the "Max Bounces" settings too low in Render > Light Paths