Car stalling at idle after topping it off.

It might be a vacuum issue with the tank or cap. I put my ear next to the filler tube and stop at first girgle.
I wind up doing the exact same thing but not for driveability reasons. If not then usually gas backsplashes out and down the quarter panel. Probably a combination of the gas pump and the angle of the filler neck in the Scamp. I’m sure peeps filling up at adjacent pumps think I have a fuel sniffing problem.