Hi,
I think this is just a painting problem.
if (checkBoxAdvProperties.Checked)
{
statusStrip1.Location = new Point(3, 704);
statusStrip1.Dock = DockStyle.Bottom;
statusStrip1.Show();
statusStrip1.Visible = true;
this.ClientSize = new System.Drawing.Size(1037, 755);
this.Refresh();
}