As Yogesh said, Azure SSO with pgAdmin 4 OAuth2 authentication is very common, but we never tried Azure SSO with Webserver. Please provide your pgAdmin configuration file and Azure SSO configuration so we can understand how you would like to configure it.
Thanks,
Khushboo
Trying to switch IdP Provider from Onelogin ( working right now with Pgadmin4 + Webserver Authentication + Onelogin as IdP provider to Azure SAML SSO.
It looks like the mapped attributes might be the one causing the issue coming from Azure side.
The username in a form of firstname.lastname@domain.com gets parsed correctly but the actual group memberships not being passed along and therefore users being logged in with read only profiles and it does not respect their group memberships.