[Mobile][Skia][Wasm] cannot set the ItemsPanelTemplate to be a StackPanel on FlipView

[Marc-Antoine-Soucy]

Current behavior

When you set the ItemsPanelTemplate to be a stackpanel on IOS, it throws an exception

On android it looks like this:

On skia and WASM, it doesnt show up

Expected behavior

It should be like on windows, where you can do it so that the height is set automatically

Instead of having to set a hardcoded height.

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

In the MainPage

<StackPanel>
	<FlipView x:Name="flipView">
		<FlipViewItem>
			<Border Background="LightBlue"
					Height="500">
				<TextBlock Text="Item 1"
						   FontSize="30"
						   HorizontalAlignment="Center"
						   VerticalAlignment="Center" />
			</Border>
		</FlipViewItem>
		<FlipViewItem>
			<Border Background="LightGreen"
					Height="500">
				<TextBlock Text="Item 2"
						   FontSize="30"
						   HorizontalAlignment="Center"
						   VerticalAlignment="Center" />
			</Border>
		</FlipViewItem>
		<FlipViewItem>
			<Border Background="LightCoral"
					Height="500">
				<TextBlock Text="Item 3"
						   FontSize="30"
						   HorizontalAlignment="Center"
						   VerticalAlignment="Center" />
			</Border>
		</FlipViewItem>
		<FlipView.ItemsPanel>
			<ItemsPanelTemplate>
				<StackPanel Orientation="Horizontal" />
			</ItemsPanelTemplate>
		</FlipView.ItemsPanel>
	</FlipView>

	<TextBlock Text="Can see this" />
</StackPanel>

BasicApp.zip

Workaround

You can hardcode a height to be the same as the expected height

Works on UWP/WinUI

Yes

Environment

No response

NuGet package version(s)

<PackageReference Include="Uno.Resizetizer" Version="1.2.0-dev.68" />
<PackageReference Include="Uno.WinUI" Version="5.0.0-dev.3407" />
<PackageReference Include="CommunityToolkit.Mvvm" Version="8.1.0" />
<PackageReference Include="Microsoft.Extensions.Logging.Console" Version="7.0.0" />
<PackageReference Include="Uno.Extensions.Logging.OSLog" Version="1.7.0-dev.1" />
<PackageReference Include="Uno.UI.Adapter.Microsoft.Extensions.Logging" Version="5.0.0-dev.3407" />
<PackageReference Include="Uno.WinUI.RemoteControl" Version="5.0.0-dev.3407" Condition="'$(Configuration)'=='Debug'" />

Affected platforms

WebAssembly, Android, iOS, Skia (GTK on Linux/macOS/Windows)

IDE

Visual Studio 2022

IDE version

17.7.4

Relevant plugins

No response

Anything else we need to know?

No response