Gitlab Local Account Creation Disable (If Possible)

Hey All,

We are currently running a self managed instance of Gitlab and are trying to enforce SAML logins, upon doing so, noticed that a local gitlab account must still get created at some point (which syncs with the AD behind) which is fine thus far, however, users can change there password in their profile settings which does not affect the password in our AD but the local password, which can then be used to login to gitlab via standard user/pass. Am wondering if there is a way to prevent local accounts from actually existing)