Has he not done VAR(AVAR?) on UEFA games though? I know Michael Salisbury has and he does not have a badge. Mind you it's confusing because Attwell has a FIFA badge and he never referees any UEFA games, just a VAR for them.
It does seem perhaps the VAR has got the law wrong but unless we hear the audio, we will never know. As you said in a previous post, I doubt this will appear on Mic'd up because of Palaces surprisingly lack of reaction to this and potentially not exposing a VAR getting the law mixed up.