Weird issue with UITabBarController

Question

I have an application with UITabBarController with 8 items. First time I load the application it works all good. I can see the "More" button, I can click it and do all the fun stuff.

Now, when the tabbar object is reload, after signout/signin, the more button act weird. First I don't see the "..." icon above the "More" text. And when I click on the "More" button it shows null screen.

Any clue what might be causing it ?

thanks!