"First name" and "Last name" field isn't respecting the order defined at User preferences

When creating a new user, it's showing the "Last Name" and "First Name" fields into USA format.

In my country (Brazil), it's more common we fill the First name and the Last name after.

Into my User preferences and at Global preferences, we'd set the Display order of lastnames firstnames (Ordem de exibição de sobrenomes e nomes) to "First Name, Last Name" (Primeiro nome, Sobrenome).

It would be great if GLPI also reflect this preference at it's forms.