UIVideoEditorController delegate method called twice

Question

I'm using UIVideoEditorController, but the success delegate method called twice for me. However, all pointers of all passed objects tell it sends exactly the same data.

let editor = UIVideoEditorController()
editor.videoMaximumDuration = 10.0
editor.videoQuality = .typeIFrame1280x720
editor.delegate = self
editor.videoPath = // some path goes here
self.present(editor, animated: true, completion: nil)

And then the following method prints "here" 2 times.

func videoEditorController(_ editor: UIVideoEditorController, didSaveEditedVideoToPath editedVideoPath: String) {
    print("here")
    self.dismiss(animated: true, completion: nil)
}

Answer 1

func videoEditorController(_ editor: UIVideoEditorController, didSaveEditedVideoToPath editedVideoPath: String) {
    editor.delegate = nil
    editor.dismiss(animated: true)
}

Answer 2

yes, I know, this bad way but workin :)

var isSaved:Bool = false

func videoEditorController(_ editor: UIVideoEditorController, didSaveEditedVideoToPath editedVideoPath: String) {
   if(!isSaved) {
      print("here")
      self.isSaved = true
   }
       self.dismiss(animated: true, completion: nil)
   }