UICollectionView inside FloatingPanel jumps to top when scrolling

[pytel87]

Short description

UICollectionView inside FloatingPanel jumps to top when scrolling. I am able to scroll it on first drag, but with second drag it always jumps to top.

Expected behavior

UICollectionView should scroll through its cells if possible.

Actual behavior

Code example that reproduces the issue

let contentVC = TestVC.instantiate(fromAppStoryboard: .FloatingViewVCs)
        fpc.set(contentViewController: contentVC)
        fpc.surfaceView.grabberHandle.isHidden = true
        fpc.delegate = self
        if let scrollView = contentVC.getScrollView(){
            fpc.track(scrollView: scrollView)
        }
        fpc.addPanel(toParent: self)

Environment

Library version 1.5.0 Installation method Cocoapods iOS version(s) 12.1 Xcode version 10.1