Why did the CollectionView frequently invoke GC at loading and display nothing eventually

[1357310795]

https://github.com/dotnet/maui-samples/tree/main/6.0/XAML/Fundamentals

I tried to replace the default Listview with Sharpnado.CollectionView in the ListViewDemoPage.xaml

<sho:CollectionView ItemHeight="{StaticResource rowHeight}" ItemsSource="{x:Static local:NamedColor.All}">
        <sho:CollectionView.ItemTemplate>
            <DataTemplate>
                <ViewCell>
                    <StackLayout
                        Padding="5,5,0,5"
                        Orientation="Horizontal"
                        Spacing="15">
                        <BoxView
                            HeightRequest="{StaticResource boxSize}"
                            WidthRequest="{StaticResource boxSize}"
                            Color="{Binding Color}" />
                        <StackLayout Padding="5,0,0,0" VerticalOptions="Center">
                            <Label
                                FontAttributes="Bold"
                                FontSize="14"
                                Text="{Binding FriendlyName}" />
                            <StackLayout Orientation="Horizontal" Spacing="0">
                                <Label Text="{Binding Red, Converter={StaticResource intConverter}, ConverterParameter=255, StringFormat='R={0:X2}'}" />
                                <Label Text="{Binding Green, Converter={StaticResource intConverter}, ConverterParameter=255, StringFormat=', G={0:X2}'}" />
                                <Label Text="{Binding Blue, Converter={StaticResource intConverter}, ConverterParameter=255, StringFormat=', B={0:X2}'}" />
                            </StackLayout>
                        </StackLayout>
                    </StackLayout>
                </ViewCell>
            </DataTemplate>
        </sho:CollectionView.ItemTemplate>
    </sho:CollectionView>

but as I tried to enter ListViewDemoPage，the application is stuck and a lot of GC is invoked.

And no item was displayed...