how reset/reinstance a componenent

[ti-integra]

in the demo gallery when change sidebar the widget reset,

in my code when I change de siderbar the widget/component is in the last state and not a new

example in another lib, iced sidebar example

currently occur (in slint its the same result)

    fn update(&mut self, message: Message) {
        match message {
            Message::TabSelected(selected) => self.active_tab = selected,
            Message::Login(message) => self.login_tab.update(message),
            Message::Ferris(message) => self.ferris_tab.update(message),
            Message::Counter(message) => self.counter_tab.update(message),
            Message::Settings(message) => self.settings_tab.update(message),
            Message::TabClosed(id) => println!("Tab {:?} event hit", id),
        }
    }

what I want (this is the result that I want code in slint)

    fn update(&mut self, message: Message) {
        match message {
            Message::TabSelected(selected) => {
                self.active_tab = selected.clone();
                self.reset_tab(selected);
            }
            Message::Login(message) => self.login_tab.update(message),
            Message::Ferris(message) => self.ferris_tab.update(message),
            Message::Counter(message) => self.counter_tab.update(message),
            Message::Settings(message) => self.settings_tab.update(message),
            Message::TabClosed(id) => println!("Tab {:?} event hit", id),
        }
    }
    fn reset_tab(&mut self,tab_id:TabId){
        
        match tab_id {
            TabId::Login => self.login_tab = LoginTab::new(),
            TabId::Ferris => self.ferris_tab = FerrisTab::new(),
            TabId::Counter => self.counter_tab = CounterTab::new(),
            TabId::Settings => self.settings_tab = SettingsTab::new(),
        }
    }

anyone know how I can reach the second example result works in slint? or what's wrong with my code

my code