Environment Background Color changes lighting

Help and Troubleshooting
1

I’d like to report another issue I have with 2023.3 is the influence Background Color option has in the lighting.
In previous versions I could change between Background Color, Lighting Environment and Backplate Image freely without influencing the model.
Today I just noticed why I’m not getting the results I’m used to.

Comparing a preview of Background Lightting Envrionment vs Color:

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NEW.26.jpg1748×983 261 KB
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NEW.27.jpg1748×983 188 KB

I depend on a solid background color to matte the models correctly during post production.

2

I can not reproduce. This is a cube with a red background color and the default startup lighting environment. I have tried it with a diffuse and a metal material on the cube. On my end, the cube looks the exact same no matter what…

image
image.png2134×1872 178 KB

3

Maybe I could share the ksp and you could take a look, please?
I understand that this is not expected behavior.

4

Yes, feel free to share the file with me @rui.antunes

5

Here you go. Thank you.
https://mega.nz/file/NAlg0CjT#egqmMyoyt7yDAxvpgoN8ve3gEq6NL9Da2o6TDJ-cTb0

6

I think it might be related to Generic material and Sheen.