New webpage password won’t update in Passwords.

In the Passwords, I noticed a security warning for a password for a sign-in for a shopping webpage. The warning said the password is compromised. I signed into the account and changed the password with two-factor-authentication. It worked. I went back to Passwords & the security warning did not change, showing the same old password. I checked the Passwords on the Mac & iPhone, both having the same issue. Why would Passwords not update to the new password and remove the security warning?