Button Command will not fire when inside flyout inside list

[KWodarczyk]

Current behavior

inside the list When clicking button that is inside the flyout it should increment the counter same way as clicking the button outside the list

<Page x:Class="UnoBugsApp.Presentation.MainPage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:local="using:UnoBugsApp.Presentation"
      xmlns:uen="using:Uno.Extensions.Navigation.UI"
      xmlns:utu="using:Uno.Toolkit.UI"
      NavigationCacheMode="Required"
      RequestedTheme="Dark"
      Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
  <ScrollViewer>
    <Grid utu:SafeArea.Insets="VisibleBounds">
      <Grid.RowDefinitions>
        <RowDefinition Height="Auto" />
        <RowDefinition />
      </Grid.RowDefinitions>
      <utu:NavigationBar Content="{Binding Title}" />

      <StackPanel Grid.Row="1"
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Spacing="16">
        <TextBox Text="{Binding Name, Mode=TwoWay}"
            PlaceholderText="Enter your name:" />

        <Button Content="Go to Second Page"
            AutomationProperties.AutomationId="SecondPageButton"
            Command="{Binding GoToSecond}" />

        <StackPanel DataContext="{x:Bind TestViewModel}" x:Name="testList">

            <!--this works fine in weasm-->
            <Button Content="Button with flyout not in the list" Foreground="Green" BorderBrush="Green" >
                 <Button.Flyout>
                   <Flyout>
                     <Button Content="Increment"
                     Command="{Binding ElementName=testList, Path=DataContext.TestCommand}"/>
                   </Flyout>
                 </Button.Flyout>
               </Button>

               <TextBox Text="{Binding ElementName=testList, Path=DataContext.Count}"
                   PlaceholderText="Counter" />

            <!--this does not work in wasm nor windows apps sdk-->
            <ItemsRepeater ItemsSource="{x:Bind TestViewModel.TestList}"  >

              <ItemsRepeater.ItemTemplate>
                <DataTemplate>
                <StackPanel Spacing="10">

                  <Button Content="Button with flyout in the list" AllowFocusOnInteraction="True" Foreground="Red" BorderBrush="Red" >
                      <Button.Flyout>
                        <Flyout Placement="RightEdgeAlignedTop" AllowFocusOnInteraction="True">
                          <Button Content="Increment"
                                Command="{Binding ElementName=testList, Path=DataContext.TestCommand}"/>
                          </Flyout>
                      </Button.Flyout>
                    </Button>

                    <TextBox Text="{Binding ElementName=testList, Path=DataContext.Count}"
                            PlaceholderText="Counter" />
                  </StackPanel>

                </DataTemplate>
              </ItemsRepeater.ItemTemplate>

            </ItemsRepeater>

            <!--this will work-->
           <ItemsRepeater ItemsSource="{x:Bind TestViewModel.TestList}"  >

              <ItemsRepeater.ItemTemplate>
                <DataTemplate>
                <StackPanel Spacing="10">

                  <Button
                    Content="Button in the list no flyout"
                    Command="{Binding ElementName=testList, Path=DataContext.TestCommand}"
                    AllowFocusOnInteraction="True"
                    Foreground="Green" BorderBrush="Green" >
                  </Button>

                    <TextBox Text="{Binding ElementName=testList, Path=DataContext.Count}"
                            PlaceholderText="Counter" />
                  </StackPanel>

                </DataTemplate>
              </ItemsRepeater.ItemTemplate>

            </ItemsRepeater>
        </StackPanel>

      </StackPanel>
    </Grid>
  </ScrollViewer>
</Page>

Expected behavior

Clicking the button in the list in the flyout should increment the counter

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

Build and run the attached project for wasm and click on the buttons, only green buttons work

UnoBugsApp.zip

Workaround

need to use Click event

Works on UWP/WinUI

None

Environment

Uno.WinUI / Uno.WinUI.WebAssembly / Uno.WinUI.Skia

NuGet package version(s)

"Uno.Sdk": "5.5.54"

Affected platforms

WebAssembly, Windows (WinAppSDK)

IDE

Visual Studio 2022

IDE version

No response

Relevant plugins

No response

Anything else we need to know?

No response

[jeromelaban]

Thanks for the report!

Could you validate that it also does not work with the netX.0-windows target?

[KWodarczyk]

tested for net8.0-windows10.0.19041; windows apps sdk packaged and same issue

[jeromelaban]

Thanks for the update.

If the behavior is not working on windows apps sdk packaged, this means that it is not a behavior we'll change in Uno either.

This means you'll need to work this behavior differently, using XAML behaviors or code-behind.