WPF Bug: Cursors.None causes GC.Collect

CursorCausesGCCollect.cs

using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;

namespace WpfCore
{
    public class CursorCausesGCCollect : Window
    {
        private readonly LinkedList<Guid> _largeMemoryUsage = new LinkedList<Guid>();
        private readonly Line _line;

        public CursorCausesGCCollect()
        {
            for (int count = 1024 * 1024 * 32; count != 0; count--)
                _largeMemoryUsage.AddLast(Guid.Empty);

            Width = Height = 200;
            ResizeMode = ResizeMode.NoResize;

            _line = new Line { StrokeThickness = 2, Stroke = Brushes.Black };

            Content = new Canvas
            {
                IsHitTestVisible = false,
                Children =
                {
                    new TextBlock
                    {
                        Text = "1. Press mouse button\n2. Move mouse quickly",
                        Foreground = Brushes.Gray,
                        Margin = new Thickness(20)
                    },
                    _line
                }
            };
        }

        protected override void OnMouseDown(MouseButtonEventArgs e)
        {
            base.OnMouseDown(e);

            if (CaptureMouse())
            {
                var pos = e.GetPosition(this);
                _line.X1 = _line.X2 = pos.X;
                _line.Y1 = _line.Y2 = pos.Y;
                Cursor = Cursors.None;
            }
        }

        protected override void OnMouseUp(MouseButtonEventArgs e)
        {
            base.OnMouseUp(e);
            ReleaseMouseCapture();
        }

        protected override void OnLostMouseCapture(MouseEventArgs e)
        {
            base.OnLostMouseCapture(e);
            Cursor = null;
        }

        protected override void OnMouseMove(MouseEventArgs e)
        {
            base.OnMouseMove(e);

            if (IsMouseCaptured)
            {
                var pos = e.GetPosition(this);
                _line.X2 = pos.X;
                _line.Y2 = pos.Y;
            }
        }
    }
}