Hi NV96,
I found the best solution for now is to use this material setup for anything that’s being reflected black.
In my case I had context building’s glass reflecting dark so by using RayTracingQualitySwitch keeps the default look of the material but makes it look different in reflections. My setup in the screenshot makes reflected objects appear lighter by adding some Emissive Color and reducing Metallic so you can see more white Base Color.
This works with Lumen reflections.
