MultiColumnComboBox with ScrollOnMouseWheel skips every second entry

        
public RadForm1()
        {
            InitializeComponent();

            DataTable dt = new DataTable();
            dt.Columns.Add("Id", typeof(int));
            dt.Columns.Add("Name", typeof(string));
for (int i = 0; i < 20; i++)
            {
                dt.Rows.Add(i, "Item"+i);
            }
            this.radMultiColumnComboBox1.DisplayMember = "Name";
            this.radMultiColumnComboBox1.ValueMember = "Id";
            this.radMultiColumnComboBox1.DataSource = dt;
            this.radMultiColumnComboBox1.ScrollOnMouseWheel = true;
            this.radMultiColumnComboBox1.SelectedValueChanged+=radMultiColumnComboBox1_SelectedValueChanged;
        }

        private void radMultiColumnComboBox1_SelectedValueChanged(object sender, EventArgs e)
        {
            Console.WriteLine("Value: "+this.radMultiColumnComboBox1.SelectedValue);
        }
            

            this.radMultiColumnComboBox1.ScrollOnMouseWheel = false;
            this.radMultiColumnComboBox1.MultiColumnComboBoxElement.TextBoxElement.TextBoxItem.TextBoxControl.MouseWheel += TextBoxControl_MouseWheel;

        private void TextBoxControl_MouseWheel(object sender, MouseEventArgs e)
        {
            if (e.Delta > 0)
            {
                this.radMultiColumnComboBox1.EditorControl.GridNavigator.SelectPreviousRow(1);
            }
            else
            {
                this.radMultiColumnComboBox1.EditorControl.GridNavigator.SelectNextRow(1);
            }
        }