Combobox and MousePointer strange issue

I'll try to explain as clearly as possible. These steps should replicate the problem.

1. Add a form to a project.
2. Add 2 comboboxes to the form (combobox1 and combobox2).
3. Add this code,

Code:

---

    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Me.ComboBox1.Select()
    End Sub

    Private Sub ComboBox2_GotFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox2.GotFocus
        Me.ComboBox2.DroppedDown = True
    End Sub

---

4. Set the form as the Startup form.
5. Run the project.
6. Move the mousepointer off the form/project
7. Enter something in Combobox1
8. Press Tab
9. Move the mousepointer over the form

My mousepointer disappears when it's moved over the form. If you click the mouse the mousepointer behaves normally.

I don't understand why this happens, but I'd like to find out. Does anyone know why this happens?

Thanks for any information

Did anyone try this?
Did you have any trouble with the mousepointer or am I just special?