Tab Bar controller disappears when authenticates with native Dropbox app
<p>I have a tab bar application with two tabs "Tab1" and "Tab2". </p>

<p>Through Tab1 i have a table view with Unlink button which unlinks the Dropbox account.
Through Tab2 i have a table view which lists out the Dropbox account content i.e lists of files and folders in my account.</p>

<p>Step1. I have clicked on Unlink Dropbox in Tab1
Step2. I have clicked on Tab2 and it authenticates with Native dropbox app
Step3. There is a background and foreground movement. When it authenticates and brings my app into Foreground
             I clicked on Tab1. The entire Tab bar controllers disappears.</p>

<p>Not able to find out why the Tab Bar disappears</p>

<p>Pl. help i need urgent resolution to this.</p>
