Why does a single mesh ignore light from a single source

I have a fireplace in my scene with a point light in it (the fire), and the light seems to work perfectly fine on everything EXCEPT the inside of the fireplace.

I suspect the problem has to do with culling. In order to give my game a 2d look, my camera has a Field of View of 2 and a Spring Arm length of 98,000.

But what I don’t get is why do all of my lights show just fine on all of my objects, EXCEPT for the fire’s light on the chimney

This picture is of how the light and chimney look in the viewport. Just fine.

This is how they look in-game. The fire light completely ignores the chimney. I also see that if I increase the directional lighting (my main light source in the level) then the chimney IS effected by that change of light.

This is an in-game screenshot when I ejected from my game camera and zoomed way the hell out, you can still see that little glow which is the light/chimney acting as they are supposed to.
Screen Shot 2024-01-08 at 7.15.26 AM

Is the problem with my light source, chimney or game camera? I’ve examined all three and everything seems normal, but the combination of the three = problem.