filling with fuel

When filling up the fuel blows back up the filler. Is there an air relief somewhere? I have looked but not found it. One of you will know.

I don’t know of one David but I’ve found the same depending on what angle you hold the pump nozzle at, I try to keep it parallel with the rear screen pointing left <—— oh and don’t squeeze the pump lever all the way....

It's a long-standing undocumented feature!