So, let's also look at the permissions for that role for all involved fields in the formula. Have you done that yet? If that role has restricted permissions in any field used in the formula, it will not work. Also, look at the form being used by that role. Does that role use a different form when editing and viewing a record? Or, if there is only one form being used for all roles, does a different report field display for that particular role? Look inside the form properties where all the fields used are shown. Is there more than just one report field?
