Inside of a ViewportFrame, I’ve set up a scene with PBR materials and a Sky instance. The specular reflections appear correct, but the diffuse lighting doesn’t match.
Instead, it pulls diffuse colours from the main skybox in Lighting.
Expected behavior
I expect the viewport frame to use the diffuse lighting provided by the skybox that’s parented to it.
I can emulate this by setting the skybox in Lighting to match the skybox in the viewport frame:
