I have a UITabBarController as my main RootViewController. Each tab is a NavigationController containing a ViewController as its root view controller. If i present a view modally wrapped in a UINavigationController from a tabs ViewController and the app is put in the background, the modal window is still present, but the screen behind is blank/black when the app comes back to the foreground. I also get the same behavior when presenting a UIAlertAction.
Thanks for the help!