I am having problem with something as trivial as removing default lighting from the scene. Basically, I went with empty preset with starter content, and upon loading the preset, I have deleted everything from the scene, and imported just my single asset with gray, non-self illuminated material. Unfortunately, when I click rebuild lighting, I still get some blue light in the scene, despite having absolutely everything else in my scene deleted:
This makes no sense to me as when there is no scene environment or any direct lights, there’s nothing that can illuminate my scene and it should turn out black.
It’s Force No Precomputed Lighting under your World Settings.
Something else that may cause it to appear that there’s lighting in the scene is your reflection captures. Though it’s not applicable for the OP since they didn’t have any. Just FYI.