I was just playing with Azure AD B2C UI in the Portal, and to my amazement I was unable to add a group to a group. I thought this might have been a glitch with my browser, but when I searched for "Nested groups" in relation to AD, I saw this come up as a feature request!
The function to Add Group to a Group in the Portal does actually 'work.' I even get a notification saying "add group member successful," but the group does not appear anywhere in the lists.
Am I correct in thinking that nesting groups is not offered by AD??? I actually really need this, and right now it's looking like the only way to implement group hierarchies is via Directory Extensions? Is this correct? What other workarounds can I have? It is looking increasingly likely that Azure AD/B2C cannot be a fit for our needs, and I am going to have a real hard time selling this internally if basic functions like group hierarchies are unavailable.