With sssd, "getent group" miss a user whose primary group is root.

Issue

• With sssd, "getent group" miss a user whose primary group is root.

[Steps to Reproduce]

1. Install RHEL8.1 or RHEL8.2 Beta

2. Uncomment the following line in /etc/pam.d/su to implicitly trust users in the "wheel" group.

# vi /etc/pam.d/su
...
auth        sufficient  pam_wheel.so trust use_uid


3. Add a user as primary group: root and supplementary group: wheel

# useradd -g root -G wheel user01


4. Run su as follows.

# su user01                      # *
$ su
Password:                        # It's not supposed to.

* "su user01" makes the following situation.

# grep wheel /etc/group
wheel:x:10:user01
# getent group wheel
wheel:x:10:

[Expected results]

# getent group wheel
wheel:x:10:user01