MDI child doesn't keep maximized box inactive as expected
<p>I have a mdi child inside a container form. I don't want the child to have minimize and maximize box. So I deactivated these boxes from child's side. But when the child form opens, the minimize box is inactive as expected, but not the maximize box too. When I maximize child form, then the maximize also deactivates. But why this is not happening in the first place and needs to be maximized once and then the box disappears?</p>

<p>Thanks in advance.</p>
