Why is there a different global navigation when you are at homepage or inside list/site content?

Question

Our global navigation has strange behavour.

When user is at startpage on a site the global navigation looks correct, but when same user navigates to a list or site content the global navigation looks different in a incorrect way. How is this even possible?

Startpage at the site:

When you are inside site content or inside a list.

It seems to be a Microsoft issue, the issue occours if user is using the new interface. If you return to the old interface it works! ;)

Answer 1

In the Navigation setting (http://spsite/_layouts/15/AreaNavigationSettings.aspx) uncheck the box saying to display pages in the top navigation.

If that doesn't solve your problem, I guess you're suffering from the same error MS has received in User Voice:

"Currently the new document library experience does not support Managed Navigation. It would be great to have this as currently using the structured navigation seems buggy in the new experience. Specifically, it ignores the "hidden" attribute of structured navigation which can make for some large menus. We love the new experience and are hoping to train users up and roll it out however we need to get navigation right before we can do this."