Scenekit animations stopped working on iOS 11.2

btw, i use an animationPlayer with scnAnim files:

if player == nil {
            if let url = Bundle.main.url(forResource: "art.scnassets/animations/\(name)", withExtension: "scnanim") {
                let anim = SCNAnimation(contentsOf: url)
                player = SCNAnimationPlayer(animation: anim)
            }
        }
skeleton.addAnimationPlayer(player!, forKey: name)
player?.play()

I think the issue is with SCNAnimationEvents

I use SCNAnimationEvents to chain animations.

I start the event a little before the end of the previous to allow blending the animations.

For some reasons i can't understand yet, sometimes the animation events are not triggered although it worked fine on previous iOS versions.

Anyone else has issues with SCNAnimationEvents not triggered in iOS 11.2?

I have a similar issue reading PDF file from Main Bundle. File exists there, but it cannot be presented to te user. I use QuickLook framework. And yes, all was working fine before iOS 11.2
Here is the part of code:

func previewController(_ controller: QLPreviewController, previewItemAt index:Int) -> QLPreviewItem {

   let path = Bundle.main.url(forResource: episode, withExtension: "pdf")
   let url = NSURL.fileURL(withPath: (path?.path)!)
   return url as QLPreviewItem
}

override func viewDidLoad() {
   ...
   let viewPDF = QLPreviewController()
   present(viewPDF, animated:false, completion:nil)
}

The error I am getting after update on 11.2 is:

Couldn't issue file extension for url: file///var/containers/Bundle/Application/BD468...../NameOfApp.app/File001.pdf #PreviewItem

If I copy all the PDF files (around 200Mb) from Main Bundle to Documents Folder and change path, it works fine.

let path = FileManager.default.urls(for: .documentsDirectory, in: .userDomainMask).first?.appendingPathComponent(episode+".pdf")

But the problem is that now I have double size of PDFs (400 Mb), since I can't move or remove files from Main Bundle.

Any idea?