iphone - How do you solve TabBarController view position problems? -

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i'm using storyboard. hierarchy follows:

  • uinavigationcontroller
    • uiviewcontroller
      • contianer view
        • uipageviewcontroller
      • container view
        • uitabbarcontroller
          • uiviewcontroller
            • containerview
              • uiviewcontroller (with date , fields)
            • uilabel

my problem last view controller's view positioned incorrectly; appears if placed 20 pixels below should be. have no clue can , i've searched online might me out.

here image of prototype looks right now: incorrectly drawn views

here image of storyboard file: storyboard image


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