Divi, Elementor, and other builders will grey out the hidden sections so that the user/builder can still see what is there even though its not visible in publish view. Right now you have to go through all the layers and dig deep in drop downs to see what is hidden and not.
Also in funnels if you hide a section each piece of that section also gets "hidden" so you have to turn them on 1 by 1 and not just the section on and off. It's a time consuming bug. It was not replicated on this video because I was on a site not a funnel.