Only owner see casting shadows to non-owners

I’m setting up a split screen game, and i’ve got a mesh set to “only owner see” its working properly as far as visibility goes; the owner can see it, the other player cannot. but when the owner brings his light source near the object the non-owning player sees a shadow cast by the invisible object. Any ideas how to stop this other than unchecking the “cast shadow” box in lighting completely?

This also seems to be a problem in 5.2.1 anyone find a solution for this?