swiftyOnboardOverlayForPosition never being called

[Malenea]

Hello, I tried following the examples, it worked well for the CustomPage, everything shows as expected, unfortunately it's not working for the CustomOverlay... Don't know why... I can modify the elements (i.e the buttons) programmatically but it seems to never update itself.

func swiftyOnboardOverlayForPosition(_ swiftyOnboard: SwiftyOnboard, overlay: SwiftyOnboardOverlay, for position: Double) {
        print("====> test <====")
        let overlay = overlay as! CustomOverlay
        let currentPage = round(position)
        overlay.pageControl.currentPage = Int(currentPage)
        overlay.buttonContinue.tag = Int(position)
        if currentPage == 0.0 || currentPage == 1.0 {
            overlay.buttonContinue.isHidden = true
        } else {
            overlay.buttonContinue.isHidden = false
            overlay.buttonContinue.setTitle("Get Started!", for: .normal)
        }
    }

Test is never printed. And using default overlay gets the controlPage updated but not the buttons.

[spaquet]

Same issue, but only for the index 0.
For all the other pages (index > 0) the changes are applied.