Hi there, @jonathan.panarotto… the blank space is there because the dropdown is not required (i.e., the element’s This input should not be empty box is not checked), and a user can select the blank space to clear the value from the dropdown. If you make the dropdown required (i.e., check the aforementioned box), the blank space will go away, and the user will be required to select an option from the dropdown.
Hope this helps.
Best…
Mike