iOS 13 UISearchController + UIRefreshControl glitch

I'm using a UISearchController for search in a UITableViewController that also supports pull-to-refresh via UIRefreshControl.

The setup is very simple in a reduced Demo project

override func viewDidLoad() {
  extendedLayoutIncludesOpaqueBars = true
  title = searchTerm ?? "Search"
  super.viewDidLoad()
  setupSearch()
  setupRefresh()
}

private func setupSearch() {
  searchController.searchResultsUpdater = self
  navigationItem.searchController = searchController
  definesPresentationContext = true

  //
  //  If this is set to `true` (which is also the default), 
  // UISearchBar and UIRefreshcontroll are buggy
  //
  navigationItem.hidesSearchBarWhenScrolling = true
}

private func setupRefresh() {
  refreshControl = UIRefreshControl()
  refreshControl?.addTarget(self, action: #selector(refresh), for: .valueChanged)
}

This worked in iOS 12, but now in iOS 13 (compiled for iOS 13 with Xcode 11 GM), the Refresh Animation is broken

The only "fix" I have found so far is to set navigationItem.hidesSearchBarWhenScrolling to false, but this obviously causes the Searchbar to always stay on screen, even when scrolling.

Here is a sample project demonstrating the issue: https://github.com/iv-mexx/UISearchControl-UIRefreshControl-iOS13-Bug/tree/feature/ios13

Update: This still remains broken in Xcode 11 GM Seed 2

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