Everyone,
I'm still unable to replicate the issues with lookups and logging in with email address. I use OpenLDAP which may be different than AD. I took a look at Azure and I can't setup AD through there (for various reasons) so I would need to setup an entire windows server specifically for AD which I'm unable to do at this time.
For anyone experiencing lookup issues, please try re-entering the password in the ldap plugin config, save changes, and retest.
For anyone experiencing issues with authenticating with email address, do you allow email as alternate login? I see in Azure AD there is a setting to turn this off and on.
Cheers.