So I have a few octane lights in a scene. Some behind a glass surface and some in front.
I have them all set to 'unseen by camera' as I don't want to see the lights emitters. Just the lighting they are casting like in invisible light-bulb.
If the index of refraction of the glass is greater than 1.0 I see the light emitter shapes through the glass. I also see the reflection of the 'in front' light emitter shape on the glass itself, but I don't see the emitter.
If the index of refraction is 1.0 or smaller it works as expected and I don't see the emitters or their reflections.
I am using the path tracing kernal but it also happens with the PMC kernal.
Is this a bug? or am I missing some setting?