title: Nested push animations iOS7 bug?
body: <p>I just encountered a problem with an app I bug-tested. I was banging my head to the wall to understand why I got this error:</p>
  
  <pre><code>2013-11-25 09:02:55.687[186:60b] nested push animation can result in corrupted   navigation bar
  2013-11-25 09:02:56.055[186:60b] Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted.
  2013-11-25 09:02:57.666[186:60b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Can't add self as subview'
  </code></pre>
  
  <p>After a while i created a new project to try to reproduce the bug:</p>
  
  <p>This happends when I press down on two bar button items with different segues, and then release at the same time. I'm using story boards with segues and have NO self written code whatsoever. Is this an iOS7 bug, or am I missing something?</p>
  
  <p>I have not been able to reproduce on simulator, since I don't have two cursors... I am using an iPad2 with iOS7 7.0.3</p>
  
  <p>Image of story board:</p>
  
  <p><img src="https://i.stack.imgur.com/XdDWx.png" alt="enter image description here"></p>
  
  <p>EDIT:</p>
  
  <p>Since I got smashed and totally downvoted without noone even trying to reproduce and confirm this bug, I've reported it without confirmation.</p>
  
  <p>EDIT2:</p>
  
  <p>Apple asked for a Stack trace. But since I gave them the exact steps to reproduce, I didn't bother. It's not my job. So feel free to report this.</p>