I seem to be experiencing this same thing. After a WTG pass and then an ATG pass I still feel a slight bit of stubble on certain parts of my face. After my usual post-shave routine of alum block, Witch Hazel and finally a splash of Pinaud or Dominica Bay Rum, The bit of stubble is now undetectable.
If I hadn't experienced it myself, I would think someone be friggin' nuts telling the same story.