title: Status Bar appears in QLPreviewController after toolbar reappers
body: <p>Status bar is initially hidden in Info.plist with "Status bar is initially hidden" set to YES and "View controller-based status bar appearance" set to NO.</p>
  
  <p>But when I present a QlPreviewController, after two taps to document to make toolbar disappear and appear again, status bar appears in application too.</p>
  
  <p>Any idea how to prevent this from happening?</p>