Hey! There is a small issue with the show/hide behaviors. Take this structure:
level 1
level 1.1
level 1.1.1
level 1.1.2
level 1.2
level 1.2.1
level 1.2.2
level 1.3
level 1.3.1
level 1.3.2
level 2
When I am on the level 2 and then, scroll to top, the level 1.1, 1.2 & 1.3 show.