[BUG] RSO missing cpid in userinfo

[whyando]

cpid is missing from the response from https://auth.riotgames.com/userinfo
cpid scope IS specified.

normally https://auth.riotgames.com/userinfo returns { sub, cpid, jti } but just getting { sub }

• Frequency:
  Not every account is affected. It may only be for new accounts. I am unsure when this bug started occurring.

[colin-jiang]

Also running into this issue. I can replicate it consistently, only happens when account is new and you need to first click "Authorize", then no matter how many times you retry, /userinfo doesn't return a cpid and only returns { sub }.

(if you restart entire sign in flow then it finally works, but this is not ideal for users forcing them to retry signing in)