Expose properties to control the BackstageItem.Icon size
Make Buttons' Image properties of Object type.
Make the gallery resizable
RibbonGroup collection can be populated only w/ buttons from the designer
When the DropDownButton in an ApplicationMenu is clicked, the DropDown area should not be closed (see MS Excel for reference).
When RoutedCommand is used in RadRibbonBackasteItem the OriginalSource is wrong.
Allow RibbonWindow Minimize/Maximize/Close buttns to work in in-browser scenarios
Expose properties to control the HorizontalAlignment and VerticalAlignment of the footer content