When the Windows OS auto-hide taskbar feature is enabled, the RadRibbonWindow is clipped and offset on the top and left sides. This reproduces only if the window is maximized initially. Changing its state afterwards resolves the visual glitch. Also in order to recreate this the IsWindowsThemeEnabled property should be set to False, in order for the ribbon window to use its Telerik theme, instead of the Windows one.

Office 2016 has a search field in the ribbon for quick access to commands that may be hard to find.
Can such functionality be added to the telerik ribbon ?

Declined: We consider this functionality to be an Application logic as the information that need to be displayed is based on the UI(the defined options/buttons in the RibbonView). Also the keywords for activating a given option may be different based on client preferences or language. This functionality can easily be achieved with a custom Style for the RadRibbonTab, containing only the control which you will use for the search (RadAutoCompleteTextBlock/RadWatermarkTextBox e.t.).

The ApplicationMenu is not closed when a button's keytip is activated. 


Available in LIB version: 2016.2.725

If you set those properties they are ignored by the control. You can resize the window beyond the set restrictions.

Available in LIB version: 2015.1.2004

Available in LIB version: 2015.1.2004

The RibbonWindow buttons are not displayed when ShowInTaskbar is set to false and is minimized state.

Currently, the RadRibbonTab GetChildrenCore method creates automation peers only for the elements in its Items collection. There is no peer created for the element in the Header. Add support for this. 

This missing peer, leads to that the TextBlock in the Header of the ribbon tabs is not highlighted when using a UI inspecting tool (like Snoop and its Automation option or UISpy.exe).

You can find a solution that shows how to achieve this in the attached project.

If a RibbonView with Backstage menu is hosted in a RibbonWindow and the window's MinWidth and MinHeight properties are applied, when the Backstage is opened the size restrictions are no longer respected.

When opening Backstage using KeyTips service, NullReferenceException is thrown when the backstage items have also had KeyTips set. 

The ScreenTip of the RadRibbonView throws an exception when added to a dynamically created element

When RadRibbonView is hosted in RadRibbonWindow and the window is moved partially outside of the visual area of the screen the tabs' minimized content is misplaced.

Implicit style doesn't apply on RadRibbonTabs which are added via PRISM. 

UPDATE: An implicit style can not be applied on derived controls as their TargetType is different than the one defined in the implicit style. Basically if you set the style implicitly, the style is applied only on the types that match the TargetType exactly and not on elements derived from the TargetType value. You can find more information on the topic in the remarks section of the Style property definition: http://msdn.microsoft.com/en-us/library/system.windows.style%28VS.95%29.aspx

This is why in order to apply a Telerik predefined style on a UserControl deriving from RadRibbonTab, you  need to add a Style targeting the UserControl type in the Resources of the application. It is best to define that style after merging the Telerik ResourseDictionaries so that you can base the UserControl Style on the predefined "RadRibbonTabStyle".

 Improve the performance of the keytips functionality.

When the RibbonBackstage is open and then a RibbonBackstageItem is clicked to close the backstage, the ApplicationButton's FluentControl pressed state effect remains visible in the Fluent theme.

The ribbon tab doesn't get selec if you click in the exact middle of the header of RadRibbonTab.

To work this around, extract the ControlTemplate of RadRibbonTab and move the Grid with x:Name="ContentPanel" before the Grid with x:Name="HeaderPanel".

The HeaderVisibility property of RadRibbonTab doesn't work when changed at runtime.

A workaround is to use Visibility property of RadRibbonTab, instead of HeaderVisibility

When the EnsureHandle method of WindowInteropHelper is called on a RadRibbonWindow instance that is not shown the UI is frozen. 

Items in RadCollapsible are not rendered correctly on Windows7 with DPI 150% and UseLayoutRounding set to true and ItemSpacing is set to more than 0.

Available in LIB version: 2015.3.1215

Opening the Backstage on RibbonView's Loaded event workarounds the issue.

Available in LIB version: 2016.3.919