Gas tank overflows when filling

Let me clarify to the last poster. I don’t walk away…I step away so I’m not standing directly next to the car breathing in the vapors. I’m normally standing just to the rear of the vehicle watching how many gallons. Also, I never top off the tank as it says not to. When the auto pump shuts off, I take the pump out and drive off.

Thank you for the suggestion BustedKnuckles.