NavigationView pane isnt recognizing boolean

I am using storage to save and retrieve the status of the pane in the navigationView

 <NavigationView
     x:Name="NavView"
     Margin="0,50,0,0"
     IsBackButtonVisible="Collapsed"
     IsPaneToggleButtonVisible="False"
     IsSettingsVisible="False"
     PaneDisplayMode="Left">
     <Interactivity:Interaction.Behaviors>
         <Interactivity:EventTriggerBehavior EventName="SelectionChanged">
             <Interactivity:InvokeCommandAction Command="{x:Bind MainWindowModel.NavigateCommand}" />
         </Interactivity:EventTriggerBehavior>
     </Interactivity:Interaction.Behaviors>

     <!--  Avatar & Dropdown at the TOP  -->
     <NavigationView.PaneCustomContent>
         <StackPanel
             Margin="10,0,0,5"
             Orientation="Horizontal">
             <Button
                 Background="Transparent"
                 BorderBrush="Transparent"
                 FocusVisualPrimaryBrush="Transparent"
                 FocusVisualSecondaryBrush="Transparent">
                 <Button.Style>
                     <Style TargetType="Button">
                         <Setter Property="Template">
                             <Setter.Value>
                                 <ControlTemplate TargetType="Button">
                                     <ContentPresenter />
                                 </ControlTemplate>
                             </Setter.Value>
                         </Setter>
                     </Style>
                 </Button.Style>
                 <Button.Flyout>
                     <Flyout
                         x:Name="OptionsMenu"
                         Placement="Bottom">
                         <StackPanel Orientation="Horizontal">
                             <TextBlock
                                 Margin="0,0,0,4"
                                 VerticalAlignment="Center"
                                 Text="Compact Mode" />
                             <ToggleSwitch
                                 Margin="10,0,0,0"
                                 IsOn="{Binding IsCompactModeEnabled, Mode=TwoWay}" />
                         </StackPanel>
                     </Flyout>
                 </Button.Flyout>

So, when I press the button and enable coompactMode, I hide the pane and save it

    public partial class MainWindowViewModel : ObservableObject {

        private const string IsCompactModeEnabledKey = "IsCompactModeEnabled";
        private readonly ApplicationDataContainer _localSettings = ApplicationData.Current.LocalSettings;

        public Action<bool>? isCompactMode;

        [ObservableProperty]
        Type? currentPageType;

        [ObservableProperty]
        bool isCompactModeEnabled;

        public MainWindowViewModel() {

            if(_localSettings.Values.TryGetValue(IsCompactModeEnabledKey, out var storedValue)
                && storedValue is bool savedBool) {

                IsCompactModeEnabled = savedBool;
            }
            else {
                IsCompactModeEnabled = false; // Default value
            }

            CurrentPageType = typeof(CalendarPage);

        }

        [RelayCommand]
        void Navigate(NavigationViewSelectionChangedEventArgs args) {
            if(args.SelectedItem is NavigationViewItem selectedItem && selectedItem.Tag is string pageTag) {

                var assembly = Assembly.GetExecutingAssembly(); // Get current assembly

                CurrentPageType = assembly.GetType($"HorizonHub.View.{pageTag}");
            }
        }

        partial void OnIsCompactModeEnabledChanged(bool value) {

            isCompactMode?.Invoke(value);

            _localSettings.Values["IsCompactModeEnabled"] = value;

        }
    }
}

But If I hide the pane and start the app again, the pane is open

code

https://github.com/eduardoagr/Horizon-Hub