Un-linking External Logins to Local Accounts

[maxwebster]

I do not wish to maintain local accounts/passwords. I have 3 external authentications activated (google, microsoft, custom). Upon initial login everything is nice and smooth.

Logging out and logging back in using the same authentication service, everything nice and smooth.

Logging out, and then logging back in using a different authentication service causes issues - the system requests a password for the local account which does not have a password.

Ugly workaround: Delete the local user, is there a nicer way to handle this?

[MichaelPetrinolis]

Logging out, and then logging back in using a different authentication service causes issues - the system requests a password for the local account which does not have a password.

This should happen if somebody authenticate with an external provider using the same email as an already registered user. Then the user should authenticate himself, other wise he could hijack the account. It should not happen if the external provider identity is already registered.
To avoid this, the user should link other identities from external provider while he is logged in. I think there is functionality to link/unlink identities