Swift tvOS UISegmentedControl与外观设置不匹配

在我的tvOS应用程序中，我有一个UISegmentedControl，当切换所选片段或离开UISegmented control的焦点时，会出现奇怪的动画，字体和颜色外观与我配置的任何外观设置都不匹配。请参阅所附的.mov。 对此有什么建议吗

屏幕截图：

    if let font = UIFont(name: "Marker Felt", size: 18.0) ?? UIFont(name: "HelveticaNeue-Bold", size: 18.0),
        let select = leaderboardSelect {

        let attrsNormal: [AnyHashable: Any] = [NSFontAttributeName: font, NSForegroundColorAttributeName: UIColor.yellow]
        select.setTitleTextAttributes(attrsNormal, for: .normal)
        select.setTitleTextAttributes(attrsNormal, for: .highlighted)
        select.setTitleTextAttributes(attrsNormal, for: .disabled)
        select.setTitleTextAttributes(attrsNormal, for: .selected)
        select.setTitleTextAttributes(attrsNormal, for: .application)
        select.setTitleTextAttributes(attrsNormal, for: .reserved)

        let attrSelected: [AnyHashable: Any] = [NSFontAttributeName: font, NSForegroundColorAttributeName: UIColor.orange]
        select.setTitleTextAttributes(attrSelected, for: .focused)
    }