This looks normal, and I am not entirely sure what you mean - the Beauty is the regular Beauty without LightMix applied, and the LightMix pass is where you see the results of LightMix. If you view the Beauty, there will no effects from LightMix visible. If you change anything in the LightMix settings, the VFB will automatically switch over to showing you the LightMix pass since that's where you will see the results of your changes.