SSSD access_provider = simple is NOT working as expected after updating sssd.

Issue

• After patching to RHEL 7.3, we are having issues with AD users login where access_provider = simple doesn't work as expected.
• If we have any groups specified as restrictions within sssd.conf, we are having issues with those groups authenticating through ssh/pam . We're able to "su" into the user account just fine, and disabling the group restriction allows all domain users to authenticate (which is expected, but not desired).

access_provider = simple
simple_allow_groups = ad_group_admin@example.com  ad_group_linux@example.com