I have tried it with different settings, but none of them helped. Form1 is like a summary screen using a tree view, Form2 is displaying the details with the ability to modify the data. Form2 is modal, but I have tried it as modeless and that also didn't change anything. The border style property is set to FixedSingle and the ShowInTaskBar is set to true.
The msgbox is displayed behind the form2, but after pressing the alt key it comes up.