The RibbonGroup Header is not displayed in data-bound scenario when HierarchicalDataTemplates are used.
A "Cannot access Freezable 'System.Windows.Media.LinearGradientBrush' across threads because it cannot be frozen." exception is thrown when you try to open the window for second time using ATEasy software.
The KeyboardNavigation throws null reference exception when you try to move through the DropDownButton of the QAT and we does not have the button in the style targeting the QAT. Available in LIB version: 2016.3.1121
Close command needed when using the close button The command could be intersected as follow: static MainWindow() { RadRibbonWindow.IsWindowsThemeEnabled = false; CommandManager.RegisterClassCommandBinding(typeof(MainWindow), new CommandBinding(Telerik.Windows.Controls.RibbonView.Shell.SystemCommands.CloseWindowCommand, CloseWindowExecuted, canExecute)); } Please note that this command is available only if RadRibbonWindow.IsWindowsThemeEnabled is set to "false". Available in R1 2017 Release
Available in LIB version: 2016.3.1003
Opening the Backstage on RibbonView's Loaded event workarounds the issue. Available in LIB version: 2016.3.919
The workaround is setting in the ControlTemplate of the RadRibbonSplitButton in Button x:Name="ButtonPart" setter for a custom style or Style="{TemplateBinding ButtonPartStyle}" and adding a ButtonPartStyle in the setters of the RadRibbonSplitButton to point to the default RadButtonStyle. Available in R3 2016 Release
ActivatePreview event does not fire when the gallery is databound Available in Q1 2015 Release.
Add an way to include the Microsoft standard "Press F1 for help" to screentips in the ribbon, including the behavior to perform an action when the F1 key is pressed. UPDATE: The RibbonView exposes a HelpCommand property which basically sets the Help button command. Additionally the Help button has a predefined ScreenTip which content is controlled by the “RibbonViewHelp” resource key. You can easily change the value returned by the ResourceManager for that resource key to change the default ScreenTip information. As for performing a custom action on F1, this is considered application logic which can easily be implemented through InputBindings (http://msdn.microsoft.com/en-us/library/system.windows.uielement.inputbindings%28v=vs.110%29.aspx).
The RibbonWindow buttons are not displayed when ShowInTaskbar is set to false and is minimized state.
Users should be allowed to understand when KeyTips are opened (respectively closed).
Available in LIB version: 2016.2.725
RadRibbonDropDown is not closed when RadListBoxItem is selected with keyboard navigation(when enter is pressed) Available in LIB version: 2016.2.725
After you re-select a (RadRibbon)DropDownButton (wrapped in RadRibbonGallery expand content), the button disappears together with any other content of the RadRibbonGallery. Possible workaround could be handling DropDownClosed event of the DropDownButton and setting e.Handled = True. Available in LIB version: 2016.2.725
The ApplicationMenu is not closed when a button's keytip is activated. Available in LIB version: 2016.2.725
This exception reproduces only if the keytips are enabled and the ribbonview is set as a Content of RadPane (or RadTabItem) that is not selected, and also the MinimizeButtonVisibility property is set to Visible. The error will occur also if the HelpButtonVisibility is set to Visible. As a workaround you can set the MinimizeButtonVisibility to Collapsed. Then subscribe for the SelectionChanged event of the pane group and in its handler set the visibility to Visible only when the corresponding pane is selected. Available in LIB version: 2016.2.725
Available in LIB version: 2016.2.725
The KeyTips of the RadRibbonView are drawn incorrectly with FlowDirection set to RighToLeft Available in LIB version: 2016.2.725