I found an issue with account linking:

- I create an account using Credentials with a specific email.

- Later, I link a Google or Microsoft account in settings, but with a different email than the one used for Credentials.

- Now, when I log in with Google or Microsoft using the same email as Credentials, the system skips linking and logs me into the original Credentials account.

- This results in the same account being linked to two different Google or Microsoft accounts, causing confusion and potential access problems.