Accountant login - people edit screen only displays role of 'Accountant'

I recently created a new user with role Accountant.
I tested the login and noticed if I edit any defined 'people', the edit form only displays a user role of Accountant (only option in the list).
If this page is submitted the user role is always set to the value 'Accountant'.
So, if my accountant updates the 'Director Loan Account' value associated to me as a director, my role would be changed to an 'Accountant'.

Not a big problem but one for your list...