samba - Sep 2020 - Azure AD Connect from Samba: security groups without members

Hallo.

I have Samba 4.9.5 on Debian, which serve as AD DC for my domain. In the
domain is also one Windows server as domain member, where I run Azure AD
Connect to Office 365.

Users (with their passwords) and groups are synced ok, but groups have
no members.

Where can be some error? Could it work?

Thanks for an advice.

Luk?? Bernard