Cannot set content of the proper Select element with Django (2.x) Admin with fieldsets (spl 0.11.0))

```
# fails! probably Splinter 0.11.0 error
# selEl.select(opt.value) <============= FAILS, will set the 1-st select in fieldset, regardless we have in selEl only the 2nd one

ie. in code bellow we cannot select 'impact'. Regardless only 'impact' is selected, .select() changes always 'criticity'.

this replacement directly with webdriver works well:
from selenium.webdriver.support.ui import Select
select = Select(self.br.driver.find_element_by_name(selEl.first['name']))
select.select_by_value(opt.value) # or .select_by_visible_text('Banana')

class VyjimkyAdmin(admin.ModelAdmin):
form = VyjimkyForm
fieldsets = [
(_("Vyjimky"), {
'fields': ("vyjimka_id",
"name",
"reason",
("criticity", "impact", "scope"))
}),

```