Yeah, it’s interesting how things work rather well in the material editor or the mesh editor, but then back to the viewport and it’s not functioning. One of the things I consider with reflections and refractions in ray tracing is how the number of refraction rays needs to be cooperative with the number of reflection bounces. If there’s not enough reflection bounces, the refraction isn’t set to complete. If there’s not enough refraction rays, the reflection bounces are going to fail at correctly or fully rendering. I’ll try to check my project that it worked in, and see if there’s Project settings or something else that I’m able to identify are the necessary aspect.