RibbonGroup collection can be populated only w/ buttons from the designer

QAT should have overflow

Make the gallery resizable

Any group or button can be right clicked and added to the Quick Access Toolbar (QAT).

Expose properties to control the BackstageItem.Icon size

If you delay adding a RibbonView in a RibbonWindow, the RibbonView is placed on top of the window, hiding its TitleBar.

When both Command and IsEnabled of RadRibbonBackstage are bound, the Command has Higher priority. This is inconsistency with the behavior of Buttons and RadButtons. The RadRibbonBackStageItems should work like RadButtons.

The KeyTips of RadMenuItems go behind the menu when hovering over the RadMenuItem. This issue seems to be related to the ScreenTip/ToolTip settings applied on the RadMenuItems - if no such settings are applied, the issue cannot be reproduced.
The Tooltip popup is placed over the KeyTips popup.

RadGallery is used in RadRibbonView  and ListBox under the RibbonView with  DeferredScrollingEnabled set to true. When scrolling the Gallery, the ListBox Scrolls unexpectedly.