WinFormsAvaloniaControlHost Not Displaying Content for .Net Framework Projects

[conormcg94]

Describe the bug

WinFormsAvaloniaControlHost is failing to display content for .Net Framework Projects. Content is displayed correctly when the framework is changed to net8.0-windows.

In my example I've set the host Content to a TextBlock. It only renders for net8.0-windows

net8.0-windows

.Net Framework 4.8.1

To Reproduce

I've attached a solution with two projects with identical code targeting .net481 and .net8.0-windows that demonstrates the problem

AvaloniaWinForms.zip

Program:

[STAThread]
static void Main()
{
	System.Windows.Forms.Application.EnableVisualStyles();
	System.Windows.Forms.Application.SetCompatibleTextRenderingDefault(false);

	Avalonia.AppBuilder.Configure<Avalonia.Application>()
			.UsePlatformDetect()
			.SetupWithoutStarting();

	System.Windows.Forms.Application.Run(new Form1());
} 

Form:

public partial class Form1 : Form
{
    private readonly WinFormsAvaloniaControlHost _host;

    public Form1()
    {
        InitializeComponent();
        _host = new()
        {
            Content = new Avalonia.Controls.TextBlock { Text = "Hello World" },
        };
        Controls.Add(_host);
    }
}

Expected behavior

No response

Avalonia version

11.2.3

OS

Windows

Additional context

No response