Only 1 copy of an asset with a light source has volumetric scattering

I have an asset in my level which is a nice light with some ease of use features for me. For some reason whenever I add more than 1 of it to a level, only 1 of them will have volumetric scattering. Any idea why? In the image below all the purple lights are the same blueprint asset.

You can also see in the background of this image another blueprint asset I made earlier, which has 3 light sources and they are all giving off volumetric scattering. It seems to be an issue only this blueprint has.

I’ve double checked and all have volumetric scattering intensity set to the same level (100).