Reloaded PZ3 from 'closed'. Scene has four (4) lights only, with three (3) lit.

Light #1 spot on, has shadows

Light #2 area off ( checked by switching on then off again: There's a small, but visible difference...)

Light #3 spot on, no shadows.

Light #4 spot on, no shadows

No other lights. No cycles emission sources such as lit room luminaires. 'Terminator' eye is super-ambient, too small to add significant lighting to scene.

This is weird...