MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="MauiMemoryLeaks.MainPage"
             xmlns:local="clr-namespace:MauiMemoryLeaks"
             x:DataType="local:MainViewModel">
    <ContentPage.Resources>
        <ControlTemplate x:Key="RadioButtonTemplate">
            <Border Stroke="#F3F2F1"
                    StrokeThickness="2"
                    StrokeShape="RoundRectangle 10"
                    BackgroundColor="#F3F2F1"
                    HeightRequest="90"
                    WidthRequest="90"
                    HorizontalOptions="Start"
                    VerticalOptions="Start">
                <VisualStateManager.VisualStateGroups>
                    <VisualStateGroupList>
                        <VisualStateGroup x:Name="CheckedStates">
                            <VisualState x:Name="Checked">
                                <VisualState.Setters>
                                    <Setter Property="Stroke"
                                            Value="#FF3300" />
                                    <Setter TargetName="check"
                                            Property="Opacity"
                                            Value="1" />
                                </VisualState.Setters>
                            </VisualState>
                            <VisualState x:Name="Unchecked">
                                <VisualState.Setters>
                                    <Setter Property="BackgroundColor"
                                            Value="#F3F2F1" />
                                    <Setter Property="Stroke"
                                            Value="#F3F2F1" />
                                    <Setter TargetName="check"
                                            Property="Opacity"
                                            Value="0" />
                                </VisualState.Setters>
                            </VisualState>
                        </VisualStateGroup>
                    </VisualStateGroupList>
                </VisualStateManager.VisualStateGroups>
                <Grid Margin="4"
                      WidthRequest="90">
                    <Grid Margin="0,0,4,0"
                          WidthRequest="18"
                          HeightRequest="18"
                          HorizontalOptions="End"
                          VerticalOptions="Start">
                        <Ellipse Stroke="Blue"
                                 Fill="White"
                                 WidthRequest="16"
                                 HeightRequest="16"
                                 HorizontalOptions="Center"
                                 VerticalOptions="Center" />
                        <Ellipse x:Name="check"
                                 Fill="Blue"
                                 WidthRequest="8"
                                 HeightRequest="8"
                                 HorizontalOptions="Center"
                                 VerticalOptions="Center" />
                    </Grid>
                    <ContentPresenter />
                </Grid>
            </Border>
        </ControlTemplate>

        <Style TargetType="RadioButton">
            <Setter Property="ControlTemplate"
                    Value="{StaticResource RadioButtonTemplate}" />
        </Style>
    </ContentPage.Resources>
    <Grid RowDefinitions="50, *" RowSpacing="10">
        <Button Text="Recreate list" Command="{Binding RecreateListCommand}" />
        <VerticalStackLayout Grid.Row="1" BindableLayout.ItemsSource="{Binding Items}">
            <BindableLayout.ItemTemplate>
                <DataTemplate x:DataType="local:RadioModel">
                    <RadioButton WidthRequest="200" Content="{Binding Name}" />
                </DataTemplate>
            </BindableLayout.ItemTemplate>
        </VerticalStackLayout>
    </Grid>
</ContentPage>