The light on left is on lower level than box's roof. And I have a camera on other site.
Question to you is, why there is such a strange light line on roof? Isn't expected that light should not be visible on roof if light is on lower level? Or is it so that surface let some light come through of it?
(edit: I just found that this was issue with eevee, with cycles this is working as expected. But why with eevee?)