Collection View not following navigation bar to top, Follower leaves a grey box.

[magiusdarrigo]

I scroll up but the collection view does not follow. I use the storyboard to set up the everything and the constraints.

if let navigationController = navigationController as? ScrollingNavigationController { navigationController.followScrollView(collectionView, delay: 20.0, followers: [NavigationBarFollower(view: exploreSearchBar, direction: .scrollUp)]) } else { print("Not FOUND") }

A short youtube video on the issue:
EDIT I had the wrong link up sorry.
https://youtu.be/bmP3GWvoWqs

The top constraint for the ui collection view to the bottom of the search bar:

[magiusdarrigo]

Does anyone have any solutions for this issue? thanks ((please))
@andreamazz