Tapping the back button and swiping to go back results in an unresponsive UINavigationController

Originator:siemens.craig
Number:rdar://15672893 Date Originated:2013-12-16
Status:Duplicate/15388436 Resolved:
Product:iOS Product Version:7.0.4
Classification:UI/Usability Reproducible:Always
 
Summary:
This causes the UINavigationController and its child view controller to become unresponsive and require the app to be killed.

Steps to Reproduce:
1. Open any app with a UINavigationController. My screenshot was from using the Mail app.
2. Navigate so that there are 3 view controllers in the UINavigationController.
3. Tap the back button then immediately swipe to go back. I had to use two hands as the swipe needs to happen immediately after the tough up on the back button.

Expected Results:
The UINavigationController should pop the current view controller. It should then display the previous view controller in the stack and the UINavigationBar should have the correct title and buttons for this view controller.

Actual Results:
The UINavigationController pops the current view controller and shows the previous view controller. However, the UINavigationBar still displays title and buttons for the popped view controller (se attached screenshot). Also, the buttons in the UINavigationBar unresponsive along with any controls in the view controller.

The long on the device contains the following:
Dec 16 15:41:38 Craigs-iPhone MobileMail[12995] <Warning>: nested pop animation can result in corrupted navigation bar
Dec 16 15:41:39 Craigs-iPhone MobileMail[12995] <Warning>: Unbalanced calls to begin/end appearance transitions for <MailboxPickerController: 0x16dd89e0>.

Version:
iOS 7.0.4 (11B554a)

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