NavigationView cant set BackButtonVisible in defual xaml when PaneDisplayMode is LeftFluent

[MatinxHT]

Describe the bug

when I design a new applicaton in LeftFluent PaneDisplayMode ,I found title bar 's icon & title show in wrong way.

But then I thinks MenuItems the bad guys.And then in Debug Mode,I set my NavigationView's Xaml property in

IsBackButtonVisible="Visible"

then The UI show Great!

So I keep coding ... However ,the next time I start my application in Debug mode the BackButton dont show! I have too manul set xaml code to bring it back.Seems not about the property of IsBackButtonVisible what I set because I try Auto/Visible no one can automatically show BackButton when app start.Only one way is manually change the property of IsBackButtonVisible

And finally my way to solve this probelm by manul set property in C# code to show the BackButton

public MainWindow()
{
        InitializeComponent();
        DataContext = ViewModel;
        NavigationView.IsBackButtonVisible = NavigationViewBackButtonVisible.Visible; 
 }

To Reproduce

My NavigationView Xaml Code as follow:

<Grid Background="#1e272e">
    <ui:NavigationView
        x:Name="NavigationView"
        Margin="0,0,5,5"
        FooterMenuItemsSource="{Binding FooterMenuItems, Mode=OneWay}"
        IsBackButtonVisible="Visible"
        MenuItemsSource="{Binding MenuItems, Mode=OneWay}"
        PaneDisplayMode="LeftFluent"
        TitleBar="{Binding ElementName=TitleBar, Mode=OneWay}"
        Transition="FadeInWithSlide">
        <ui:NavigationView.ContentOverlay>
            <Grid>
                <ui:SnackbarPresenter x:Name="SnackbarPresenter" />
            </Grid>
        </ui:NavigationView.ContentOverlay>
    </ui:NavigationView>

    <ContentPresenter x:Name="RootContentDialog" Grid.Row="0" />

    <ui:TitleBar
        x:Name="TitleBar"
        Title="SwiftKit"
        Grid.Row="0"
        CloseWindowByDoubleClickOnIcon="False">
        <ui:TitleBar.Icon>
            <ui:ImageIcon Margin="0,0,0,0" Source="pack://application:,,,/Assets/Windows_icon.png" />
        </ui:TitleBar.Icon>
    </ui:TitleBar>
</Grid>

And my C# Window Code

public partial class MainWindow : Window
{
    private readonly MainWindowViewModel ViewModel = new();
    public MainWindow()
    {
        InitializeComponent();
        DataContext = ViewModel;
        //NavigationView.IsBackButtonVisible = NavigationViewBackButtonVisible.Visible;  //Set as u need
    }
}

Expected behavior

Fix the BackButton Auto Show in LeftFluent

Screenshots

No response

OS version

Windows 11

.NET version

.Net 8

WPF-UI NuGet version

3.0.5

Additional context

No response

[MatinxHT]

Maybe the same problom can reproduce in WPF UI Gallery

• First click WPF UI Gallery Settings

• Then change navigation style from left compact to fluent

We will see that title show in wrong place .bu due to AutoSuggestBoxthe NavigationMeunItem seens get a right vertical coordinates

[Moy838840554]

remove TitleBar="{Binding ElementName=TitleBar, Mode=OneWay}"

[MatinxHT]

remove TitleBar="{Binding ElementName=TitleBar, Mode=OneWay}"

It doesn't work and even worse (〒︿〒)

TitleBarmake NavigationView beauty

[Moy838840554]

<Grid>
  <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
    <ui:TitleBar Grid.Row="0" />
    <ui:NavigationView Grid.Row="1"/>
</Grid>

[MatinxHT]

<Grid>
  <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
    <ui:TitleBar Grid.Row="0" />
    <ui:NavigationView Grid.Row="1"/>
</Grid>

Oh that's a nice trick,thanks But the BcakButton still cant show up automaticlly ,so I still need to chang its property.

[Dian-Jiao]

Could you please reopen this issue? I think this bug should be fixed. Thanks!

[MatinxHT]

Could you please reopen this issue? I think this bug should be fixed. Thanks!

Yap..As a perfectionist, I think this is a bug that can be fixed in the UI framework.