Sky blueprint hides directional lighting

Hi,

So I’m currently using an blueprint for the sky from the Ultra Dynamic Sky pack, but there’s a strange problem with lighting. If I have it selected, the directional light renders through as it should, shading the environment. However, when I DESELECT the sky blueprint, the lighting doesn’t render anymore. Also, if I hide the skyblueprint in the outliner, the lighting works fine.

Thanks