I am using Structure Entries and trying to use hide from nav. This works well when I'm trying to hide an entry on ground level, but when I'm trying to hide a sub item the whole menu collapses. I'm not doing anything weird and just copied the 4th example.
Turned out that Structure Entries does not support the option to hide children from navigation. I found a plugin for Structure that does support this, and makes it possible to create more complicated navigations for your website (like Structure Entries). Here's the link to the plugin: https://devot-ee.com/add-ons/structure-nav