When a UITableView is added. It's swipe to remove gesture conflicts with Pan Gesture.

In
extension SheetViewController: UIGestureRecognizerDelegate

Add the following code, maybe put that Bool to settings to avoid breaking something for others.

public func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool { true }