NSStoryboard and Nib doesn't load NSObject if use NSWindowsController

Question

For work I use Viper-architecture and build module through NSObject that I connect directly via the Storyboard or Nib. This works well, but if you connect through the NSViewController to segue NSWindowsControllers, the application crashes with an error, since it is not called NSObject. Of course, there is the option to collect the module through the "storyboard.instantiateControllerWithIdentifier(identifier:)", but I want to use Nibs, and there optionality error.

So looks NSStoryboard

Example to GitHub