White (paper color) overprint

It is a logical error. We sometimes get PDF's originating from InDesign/Illustrator with a white object set to overprint. It seems unintentional. Maybe the object was once set to black overprint and they changed the color to white, I dunno. Annyway, white in overprint results to nothing, as any color below the object would be printed.

So, the better choice would be not to allow white to be set to overprint anywhere in the Adobe ecosystem.