Currently our limited user (and device) admins are unable to actually list the "Users" category in control hub. They encounter a never ending load, no error.
"Devices" works fine for them. They are however to list users when chosing "Groups" and listing members of specific groups, but a link to manage a user of a group ends in never ending load of "Users" category again.
Changed devices, internal and external nets, no change. Seems to be tied to the "User Admin" role, since other full org/site admins are able to view/list "Users" and manage them correctly.