In line 91 of PluggableApplicationDelegate.swift there is the method called open func application(_ app: UIApplication, public url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Boo but this should be open func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool. Not public url: but open url:.
So an app using the PluggableApplicationDelegate currently can not handle the url it was opened with.