Lights are extremely dull in the new 3D engine

I have a project with a few comps containing point lights in the old 3D engine and I have tried turning on the advanced 3D engine instead, and it almost looks like the lights just get deleted... but on further investigation it's actually that they're just super, super low intensity. To get them back to roughly equal to the classic engine lights I have to turn the intensity up like 10x. Is this an intentional property of lights in the new engine or is there a bug in their brightness?