Originally Posted by
Cobrajet
No problem! Yes, it just pops on and off...which is kind of the problem with them. I am not sure you should blame the attendant. I think if the tether for the gas cap ends up in just the right spot when you screw it back on and close the door it can pull this clip off pretty easily when you remove the cap again. You might feel a small snag, but otherwise not even notice it.
My GF didn't even know it had happened until her fuel filler door would not pop out, and we have no station attendants here in Washington.