I have got a View Controller embedded in a Navigation Controller with prefers large titles option set to true; inside the View Controller there’s a Scroll View.
I wa
If u have problem collapse root navigationBar from presented VC's scrollView, can try this: Add UIScrollView to RootVC. Important - UIScrollView must be root view(at index 0). In presentedVC we can use scrollViewDidScroll and set offset on our root UIScrollView. see here with gif and code RootVC view hierarchy: screenshot (sorry for link, not enough reputation)
in presentedVC try this
func scrollViewDidScroll(_ scrollView: UIScrollView) {
if #available(iOS 11.0, *) {
let offset = scrollView.contentOffset
rootVC.scrollView.contentOffset = offset
}
}