Workaround:

public Form1()
{
    InitializeComponent();

    this.radGridView1.TableElement.VScrollBar.ValueChanged += VScrollBar_ValueChanged;
}

private void VScrollBar_ValueChanged(object sender, EventArgs e)
{
            int maxValue = this.radGridView1.TableElement.VScrollBar.Maximum - this.radGridView1.TableElement.VScrollBar.LargeChange;
            if (maxValue < 0)
            {
                this.radGridView1.TableElement.VScrollBar.Value = 0;
            }
            else if (this.radGridView1.TableElement.VScrollBar.Value > maxValue)
            {
                this.radGridView1.TableElement.VScrollBar.Value = maxValue;
            }
}