title: App screen turn white while receiving notification
body: <p>This is so weird, I've looked and nobody has the same problem as I was.</p>
  <p>So, I noticed my app suddenly turn into white screen for few seconds when have incoming notification, this notification from other apps like facebook, whatsapp, etc. But it confuses me, why it effect my app when notification shown in the top screen for like 3 seconds, and my app turn into white except the notification.</p>
  <p>This happened  on iPhone 5 (iOS6). never happen before on iOS5.</p>
  <h1>EDIT</h1>
  <p>My app doesn't register notification, notification comes from other application, which nothing to do on my app. that is the strange one.</p>
  <p><strong>By pulling down notification also my app turned into white.</strong></p>
  <p><img src="https://i.stack.imgur.com/zMK1F.png" alt="enter image description here" /></p>
  <p>-&lt;&gt;-</p>