Resolved
AppleID logins are now fully working again.
Identified
AppleID logins now redirect from https://appleid.apple.com/ to https://account.apple.com/ (see https://appleid.apple.com/.well-known/openid-configuration which redirects and has an updated issuer) which we have accounted for but their tokens are still being issued by `https://appleid.apple.com`, breaking the default issuer verification that we perform. We are making a change to allow for the discrepancy and are aiming to have this deployed shortly.
Investigating
We're investigating a change in the Apple login provider.
Investigating
We are investigating an issue preventing a small number of users from signing in with Apple accounts.