Sign-In with Apple doesn't return family_name and given_name

Hi guys,

the /userinfo endpoint doesn’t return the family_name nor the given_name when signing with Apple:

{
  picture: 'https://s.gravatar.com/avatar/xxx.png',
  email_verified: true,
  email: 'john@doe.com',
  sub: 'apple|xxxxx.xxx',
  nickname: 'john.doe',
  name: 'John Doe',
  updated_at: '2020-06-12T07:52:58.777Z'
}

It looks like Apple has the first and last name data on their side (https://developer.apple.com/documentation/sign_in_with_apple/namei).

Thanks,

Nicolas