Hi @Stephen-Schaff,
@atripp is correct. There was an issue previously that would ignore the specified type of a principal and favor a group, but that has been fixed for a bit now.
One thing that can still happen is accidentally selecting a group versus a user when adding a permission or restriction to a task. Currently, we just present the list of users and groups in the order they are returned from the domain. If a user and a group are using the same name, it may be difficult to decipher which one you are selecting.
Can you please tell us what version of the InedoCore extensions is installed? Also, can you please verify that you are using the Active Directory (LDAP) user directory?
Thanks,
Rich