This is a screenshot I took on SEHS with the weather set to "light rain". As you can see, the area below the train is no darker than anywhere else. Shadows have practically been turned off. This is not realistic - all you have to do to confirm this is to look under a car when it's raining. The diffusion of light cloudy skies create is not this extreme. Most non-clear weather displays this issue. I hope that this issue will be fixed at some point, though I'm not hopeful.
To be fair I think the majority just think that relative to the lighting we had previously. I’m no fan of the current lighting but if you made me pick, it would be ToD4.
What is most unrealistic for me is having buildings in an urban or town where there's no light bleed at night onto the buildings and they are pitch black except for the lights from windows.