[Android/iOS] InvalidOperationException when using AppBarButton.Icon in NavigationBar in Debug Output

Current behavior

When using AppBarButton.Icon in a NavigationBar, an exception is thrown in the Visual Studio debug output. These exceptions occur only when the AppBarButton is used within the NavigationBar. No exception is seen if the AppBarButton is used without the NavigationBar.

Expected behavior

No exceptions should occur in the Visual Studio debug output like for the other platforms.

How to reproduce it (as minimally and precisely as possible)

Sample app to repro: NavigationBarSampleApp.zip

With:

      <utu:NavigationBar Background="Orange"
                         Content="TEST">
        <utu:NavigationBar.PrimaryCommands>
          <AppBarButton Click="AppBarButton_Click">
            <AppBarButton.Icon>
              <FontIcon Glyph="&#xE109;" />
            </AppBarButton.Icon>
            <ToolTipService.ToolTip>
              <ToolTip Content="Add new row" />
            </ToolTipService.ToolTip>
          </AppBarButton>
        </utu:NavigationBar.PrimaryCommands>
      </utu:NavigationBar>

In VS Debug Ouput:

For Android:

[DOTNET] warn: Uno.Toolkit.UI.DependencyObjectExtensions[0]
[DOTNET]       Error attempting to read property:
[DOTNET]       System.InvalidOperationException: The Dependency Property [UriSource] is owned by [Microsoft.UI.Xaml.Controls.BitmapIcon] and cannot be used on [Microsoft.UI.Xaml.Controls.FontIcon]
[DOTNET]          at Microsoft.UI.Xaml.DependencyObjectStore.GetValue(DependencyProperty property, DependencyPropertyDetails propertyDetails, Nullable1 precedence, Boolean isPrecedenceSpecific) in C:\a\1\s\src\Uno.UI\UI\Xaml\DependencyObjectStore.cs:line 281
[DOTNET]          at Microsoft.UI.Xaml.DependencyObjectStore.GetValue(DependencyProperty property) in C:\a\1\s\src\Uno.UI\UI\Xaml\DependencyObjectStore.cs:line 249
[DOTNET]          at Uno.UI.Controls.BindableView.GetValue(DependencyProperty dp) in C:\a\1\s\src\Uno.UI\obj\Uno.UI.netcoremobile\Release
et8.0-android\Uno.UI.SourceGenerators\Uno.UI.SourceGenerators.DependencyObject.DependencyObjectGenerator\Uno.UI.Controls.BindableView.cs:line 51
[DOTNET]          at Uno.Toolkit.UI.DependencyObjectExtensions.TryGetValue(DependencyObject dependencyObject, DependencyProperty dependencyProperty, DependencyObject& value) in D:\a\1\s\src\Uno.Toolkit.UI\Extensions\DependencyObjectExtensions.cs:line 267

For iOS

2024-10-22 19:27:35.452575-0400 NavigationBarSampleApp[44932:35292242] warn: Uno.Toolkit.UI.DependencyObjectExtensions[0] Error attempting to read property:
System.InvalidOperationException: The Dependency Property [UriSource] is owned by [Microsoft.UI.Xaml.Controls.BitmapIcon] and cannot be used on [Microsoft.UI.Xaml.Controls.FontIcon]
at Microsoft.UI.Xaml.DependencyObjectStore.GetValue(DependencyProperty property, DependencyPropertyDetails propertyDetails, Nullable1 precedence, Boolean isPrecedenceSpecific)
at Microsoft.UI.Xaml.DependencyObjectStore.GetValue(DependencyProperty property)
at Uno.UI.Controls.BindableUIView.GetValue(DependencyProperty dp)
at Uno.Toolkit.UI.DependencyObjectExtensions.TryGetValue(DependencyObject dependencyObject, DependencyProperty dependencyProperty, DependencyObject& value)
Loaded assembly: Anonymously Hosted DynamicMethods Assembly [External]
2024-10-22 19:27:36.239099-0400 NavigationBarSampleApp[44932:35292242] warn: Uno.UI.Xaml.FontHelper[0] Failed to get system font based on XamlAutoFontFamily

With:

      <utu:NavigationBar Background="DeepPink"
                         Content="TEST">
        <utu:NavigationBar.PrimaryCommands>
          <AppBarButton Icon="Favorite"
                        Click="AppBarButton_Click" />
        </utu:NavigationBar.PrimaryCommands>
      </utu:NavigationBar>

In VS Debug Ouput:

For Android

[DOTNET] warn: Uno.Toolkit.UI.DependencyObjectExtensions[0]
[DOTNET]       Error attempting to read property:
[DOTNET]       System.InvalidOperationException: The Dependency Property [UriSource] is owned by [Microsoft.UI.Xaml.Controls.BitmapIcon] and cannot be used on [Microsoft.UI.Xaml.Controls.SymbolIcon]
[DOTNET]          at Microsoft.UI.Xaml.DependencyObjectStore.GetValue(DependencyProperty property, DependencyPropertyDetails propertyDetails, Nullable1 precedence, Boolean isPrecedenceSpecific) in C:\a\1\s\src\Uno.UI\UI\Xaml\DependencyObjectStore.cs:line 281
[DOTNET]          at Microsoft.UI.Xaml.DependencyObjectStore.GetValue(DependencyProperty property) in C:\a\1\s\src\Uno.UI\UI\Xaml\DependencyObjectStore.cs:line 249
[DOTNET]          at Uno.UI.Controls.BindableView.GetValue(DependencyProperty dp) in C:\a\1\s\src\Uno.UI\obj\Uno.UI.netcoremobile\Release
et8.0-android\Uno.UI.SourceGenerators\Uno.UI.SourceGenerators.DependencyObject.DependencyObjectGenerator\Uno.UI.Controls.BindableView.cs:line 51
[DOTNET]          at Uno.Toolkit.UI.DependencyObjectExtensions.TryGetValue(DependencyObject dependencyObject, DependencyProperty dependencyProperty, DependencyObject& value) in D:\a\1\s\src\Uno.Toolkit.UI\Extensions\DependencyObjectExtensions.cs:line 267

For iOS

2024-10-22 19:29:32.907004-0400 NavigationBarSampleApp[45710:35296071] warn: Uno.Toolkit.UI.DependencyObjectExtensions[0] Error attempting to read property:
System.InvalidOperationException: The Dependency Property [UriSource] is owned by [Microsoft.UI.Xaml.Controls.BitmapIcon] and cannot be used on [Microsoft.UI.Xaml.Controls.SymbolIcon]
at Microsoft.UI.Xaml.DependencyObjectStore.GetValue(DependencyProperty property, DependencyPropertyDetails propertyDetails, Nullable1 precedence, Boolean isPrecedenceSpecific)
at Microsoft.UI.Xaml.DependencyObjectStore.GetValue(DependencyProperty property)
at Uno.UI.Controls.BindableUIView.GetValue(DependencyProperty dp)
at Uno.Toolkit.UI.DependencyObjectExtensions.TryGetValue(DependencyObject dependencyObject, DependencyProperty dependencyProperty, DependencyObject& value)
Loaded assembly: Anonymously Hosted DynamicMethods Assembly [External]
2024-10-22 19:29:33.647655-0400 NavigationBarSampleApp[45710:35296071] warn: Uno.UI.Xaml.FontHelper[0] Failed to get system font based on XamlAutoFontFamily

Workaround

N/A

Works on UWP/WinUI

Yes

Environment

Uno.UI / Uno.UI.WebAssembly / Uno.UI.Skia

NuGet package version(s)

Uno.Sdk: Reproducible in stable 5.4.10, but also with older versions like 5.3.31 for example.

Affected platforms

Android, iOS

IDE

Visual Studio 2022

IDE version

Microsoft Visual Studio Professional 2022 (64-bit) - Current Version 17.11.4

unoplatform / uno