iOS 7 Custom UINavigationBar TitleView moves when Pushing or Popping new View Controller

It's reproducible for me only if I place setting titleView code in viewWillAppear. Moving it to viewDidLoad fixes the issue

I would embed the label inside a UIView. Interface Builder doesn't like putting directly a UILabel in the titleView for some reason that may be related to your problem.

Also try to set the autoResizingMask to UIViewAutoresizingFlexibleTopMargin. In my experience any custom view in bars behaves better this way.