Pop to root view controller every time tab is clicked ? about animated-tab-bar HOT 3 CLOSED

func tapHandler(gesture:UIGestureRecognizer) {

    let items = tabBar.items as! [RAMAnimatedTabBarItem]

    let currentIndex = gesture.view!.tag
    let viewController = viewControllers![currentIndex]

    if let shouldSelect = delegate?.tabBarController?(self, shouldSelectViewController: viewController)
        where !shouldSelect {
        return
    }

    if selectedIndex != currentIndex {
        let animationItem : RAMAnimatedTabBarItem = items[currentIndex]
        let icon = iconsView[currentIndex].icon
        let textLabel = iconsView[currentIndex].textLabel
        animationItem.playAnimation(icon, textLabel: textLabel)

        let deselelectIcon = iconsView[selectedIndex].icon
        let deselelectTextLabel = iconsView[selectedIndex].textLabel
        let deselectItem = items[selectedIndex]
        deselectItem.deselectAnimation(deselelectIcon, textLabel: deselelectTextLabel)
        selectedIndex = gesture.view!.tag
        delegate?.tabBarController?(self, didSelectViewController: viewController)
    } else {
        let animationItem : RAMAnimatedTabBarItem = items[currentIndex]
        let icon = iconsView[currentIndex].icon
        let textLabel = iconsView[currentIndex].textLabel
        animationItem.playAnimation(icon, textLabel: textLabel)

        selectedIndex = gesture.view!.tag
        delegate?.tabBarController?(self, didSelectViewController: viewController)
        viewController.navigationController?.popToRootViewControllerAnimated(true)
        print("viewController: \(viewController)") 
        // prints same instance as in the viewDidLoad method of the navigation controller of selected tab
    }
}