When I create a new project, I select the "DevExpress 2010 application", then create the main MDIForm form and the second MDIChild form, and then add the dxRibbon controls to both forms, but when I create the second form and try to maximize it, it produces this:

If there is no dxribbon control in the second form, everything works fine, so I suppose this has something to do with ribbon management, any ideas?
Merging is not a problem, the main problem is that when you maximize unit4, it does not populate the parent, as in the picture.
Source Code: Here
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