DataGridView pointer bug

gistfile1.cs

/*
 * Steps to reproduce:
 *
 * 1) click the button.
 * 2) observe wait cursor displays for whole form.
 * 3) hover mouse over data grid view (wait cursor shows).
 * 4) click the button.
 * 5) observe normal cursor displayed over form.
 * 6) hove mouse over data grid view (wait cursor still shows).
 *
 * Actual Behaviour:
 * Wait cursor displays for data grid view after setting UseWaitCursor = false.
 *
 * Expected Behaivour:
 * Wait cursor should not show.
 * */

using System.Windows.Forms;

class Program {
	public static void Main (string[] args) {
		var f = new Form ();
		var b = new Button ();
		var d = new DataGridView ();

		b.SetBounds (0, 0, 20, 20);
		d.SetBounds (0, 20, 100, 100);
		f.Controls.Add (b);
		f.Controls.Add (d);

		b.Click += delegate {
			f.UseWaitCursor = !f.UseWaitCursor;
		};

		Application.Run (f);
	}
}