I have a Program Manager here who insist on owning / managing his own file share for his team. On my last file server I had him setup to his satisfaction. We recently migrated the data to a brand new server via Robocopy and since then he can no longer add / remove users or set permissions.
I have verified that he has full control permissions and that in special permissions he does have all rights including Change Permissions. I have also tried to remove and re-add him to the share.