I have setup the AAD Sign In within B2C following the instructions in this documentation article: https://docs.microsoft.com/en-us/azure/active-directory-b2c/active-directory-b2c-setup-aad-custom?tabs=applications
The process fails when AAD redirects to the response endpoint on B2C and then being redirected to https://jwt.ms with the follwing message: AADB2C90238:
The provided id_token does not contain a valid issuer. Valid issuer values: 'https://sts.windows.net/<aad-tenant-id>/<b2c-tenant-id>/'. Please provide another token and try again.
Of course this will fail because the token originating from AAD issuer will only be https://sts.windows.net/<aad-tenant-id>
Why is B2C expecting the B2C tenant ID as part of the issuer from AAD?