I’m on 4.2.0 and I have the same issue. My thumbnail renders out correctly, and the render that blender shows me is also correct, but the image file produce by it is different.
I think the lighting is getting rendered but it is very very very faint, even though it looks fine in the render view in blender and the thumbnail image saved in the folder.
I think it’s some alpha issues? if I save the file as RGB the values of the lighting looks correct, but then it isn’t transparent anymore.
I tried updating to Blender 4.5.3 LTS but the problem persist.
