Editable ComboBox height is inconsistent with non-editable ComboBox height

Look at the attached screenshot of HelloComboBox - the editble ComboBox controls are taller than the non-editable. Look at the other attached screenshot where the TextField padding inside the ComboBox has been reduced. The question is what approach is correct: one where the TextField padding is equal to a normal TextField, or one where the ComboBox heights are the same.