UIDocumentInteractionController не может представить меню

Question

Это моя функция

@discardableResult func openFile(_ url: URL, in view: UIView) -> Bool {
    guard url.isFileURL, FileManager.default.fileExists(atPath: url.path) else {
        fatalError()
    }
    let tempURL = URL(fileURLWithPath: NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true).first!.appendingPathComponent(url.lastPathComponent))
    if !FileManager.default.fileExists(atPath: tempURL.path)  {
      do {
          try FileManager.default.copyItem(at: url, to: tempURL)
      } catch let error {
          log.error(error)
      }
    }
    log.debug("cache url \(tempURL)")
    document = UIDocumentInteractionController(url: tempURL)
    document?.delegate = self
    log.debug(view)
    log.debug(document?.uti)
    log.debug(document?.name)
    return document!.presentOptionsMenu(from: view.frame, in: view, animated: true)
}

Когда оно выполнено, мое приложение не может представить меню, хотя оно возвращает true и делегат вызовет documentInteractionControllerWillPresentOptionsMenu

Журнал:

14:50:02.778 ? DEBUG Earth.openFile():237 - cache url file:///var/mobile/Containers/Data/Application/BF11E458-4208-4CD4-9329-8B65C2B4AF6F/Library/Caches/0.doc
14:50:02.780 ? DEBUG Earth.openFile():240 - <UIWindow: 0x10697f4c0; frame = (0 0; 414 736); autoresize = W+H; gestureRecognizers = <NSArray: 0x28179e5e0>; layer = <UIWindowLayer: 0x281333800>>
14:50:02.798 ? DEBUG Earth.openFile():241 - Optional("com.microsoft.word.doc")
14:50:02.799 ? DEBUG Earth.openFile():242 - Optional("0.doc")
14:50:02.823 ? DEBUG Earth.documentInteractionControllerWillPresentOptionsMenu():265 - willPresentOptionsMenu