title: Ribbon - Maximized MDI child window doesn't occupy the entire main window if the Ribbon controls on these windows are merged
body: <p>When I create a new project I select the &quot;DevExpress 2010 application&quot; then I make the main form MDIForm and the second form MDIChild and then I added dxRibbon controls to both forms but when I create the second form and try to maximize it it produces this:
  <img src="https://i.stack.imgur.com/4VKMI.png" alt="enter image description here" /></p>
  <p>If there is no dxribbon control in the second form everything works OK, so I guess it has something to do with the Ribbon control itself any ideas?</p>
  <p>The merging isn't the problem the main problem is that when you maximize the unit4 it doesn't fill the parent as in the picture.</p>
  <p>Source Code (updated sharing link 2022): <a href="https://drive.google.com/file/d/0B5RiKAQqceUDeXBERU53clVZMVk/view?usp=drivesdk&amp;resourcekey=0-ZeHAc2UyM274EDoR4LALqg" rel="nofollow noreferrer">Here</a></p>