self.presentingViewController != nil

[hslightnin]

func isModal() this is returning true because self.presentingViewController isn't nil.

im presenting like in the example
self.navigationController?.pushViewController(pdf, animated: true)

[pushchris]

@hslightnin please check the latest update. I've moved the push/present logic to the developer side as a boolean isPresentingInModal instead of automatically calculating it. There were too many edge cases when trying to handle it automatically.