ADD section for course lesson

In the new NextGen app, the sections of a LearnDash course aren't displayed.

When I create a course divided like this:
-SECTION 1
--lesson1
--lesson2

-SECTION 2
--lesson1
--lesson2

The app only displays the lessons, not the sections.

--lesson1
--lesson2
--lesson1
--lesson2
image
image

Thank you
David