Repro case of nasty .NET 1.1 SP1 bug in groupbox control, Microsoft please read

Yesterday I blogged about a horrible huge bug in the groupbox control for winforms in .NET 1.1 SP1 on a themed XP system (and that's pretty much all XP systems nowadays, since .NET 1.1 SP1 is a mandatory fix on windows update.). Today I'll show you a repro case. It's a silly form with just two nested groupboxes. On a themed XP machine you'll see that the inner groupbox' caption is garbled and has a horrible font.

I've tested this on more XP machines and they all showed the same results, with different themes (native XP ones). I'll try to contact PSS later today to get a fix for this AND to get this fixed publicly, because a private PSS-call-us-fix is useless, as users of applications by ISV's first have to call PSS to grab the special fix, which most of them won't do.

Update: It seems to occur on .NET 2.0 beta1 as well.

Full code: WinAppTest.zip

Form1.cs:

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace WinAppTest
{
	/// 

	/// Summary description for Form1.
	/// 
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.GroupBox groupBox2;
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			InitializeComponent();
		}


		#region Windows Form Designer generated code
		/// 

		/// Clean up any resources being used.
		/// 
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		/// 

		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// 
		private void InitializeComponent()
		{
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.groupBox2 = new System.Windows.Forms.GroupBox();
			this.groupBox1.SuspendLayout();
			this.SuspendLayout();
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.Add(this.groupBox2);
			this.groupBox1.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.groupBox1.Location = new System.Drawing.Point(21, 27);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(336, 174);
			this.groupBox1.TabIndex = 0;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "groupBox1";
			// 
			// groupBox2
			// 
			this.groupBox2.FlatStyle = System.Windows.Forms.FlatStyle.System;
			this.groupBox2.Location = new System.Drawing.Point(81, 45);
			this.groupBox2.Name = "groupBox2";
			this.groupBox2.TabIndex = 0;
			this.groupBox2.TabStop = false;
			this.groupBox2.Text = "groupBox2";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(502, 278);
			this.Controls.Add(this.groupBox1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.groupBox1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		/// 

		/// The main entry point for the application.
		/// 
		[STAThread]
		static void Main() 
		{
			Application.EnableVisualStyles();
			Application.DoEvents();
			Application.Run(new Form1());
		}
	}
}