Create a RadRibbonForm or a RadForm with Ribbon behavior. When you run the application and maximize the form, the titlebar's text disappears.
Workaround: Use a RadForm and add RadRibbonBar without Ribbon behavior. Then set the RadRibbonBar.RibbonBarElement.RibbonCaption.Visibility to Collapsed.
Workaround 2 : set the RadRibbonForm.AllowAero property to false