When you have set the Windows task bar to auto-hide and you maximize an RadRibbonWindow, you are not allowed to visualize the task bar on top of the RadRibbonWindow.

Available in LIB version: 2015.1.2303

When the Taskbar is auto-hidden, if the RibbonWindow is maximized, the task bar cannot be displayed.

Title bar (including the Contextual tab header) goes over the Window (MinMaxClose) Buttons

We have a RadRibbonWindow.
When it is run on Windows XP (or on Windows 7, "Windows Classic" theme) and the DPI settings are high (above 170 %), the standard window buttons (Minimize, Restore and Close) are not displayed properly (they are cut). Also there is too much space between them.

Output error in VS:

System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Telerik.Windows.Controls.RadRibbonView', AncestorLevel='1''. BindingExpression:Path=IsHostedInRibbonWindow; DataItem=null; target element is 'WindowTitle' (Name='WindowTitle'); target property is 'NoTarget' (type 'Object')

When ribbon is placed on two monitors the minimized popup is misplaced.

You can not click the ColorPicker when it is inside a RadRibbonSplitButton.

The Title of the RadRibbonWindow is not diplayed unless there is a RadRibbonView in the window.

TreeView or DataGrid, or COmbobox is placed in a dropcontent of a RibbonDropDownButton. Item is selected programmatically before the dropdown is loaded. This leads to null reference exception.

The BackstageItems are not rendered as expected when the RadRibbonView is hosted in apanel with flow direction set to right to left.

The title of the RadRibbonWindow can't be trimmed when resizing the window. Even the window's buttons are overlapped

ActivatePreview event does not fire when the  gallery is databound

Available in Q1 2015 Release.

When the Title property is set to "" the RibbonView displays the ApplicationName two times. If the Title is set to null via binding the control displays the ApplicationName three times.

The problem doesn't occur when the RadRibbonView is hosted in a vanilla Window.

Available in LIB version: 2016.2.516

When the component is hosted in a RibbonWindow and its CollapseThresholdSize is modified, if the BackstageMenu is opened on start-up, the TitleBar of the RibbonView is misaligned. Instead of displaying in the RibbonWindow title bar, it initially displays underneath it. Once you close the Backstage, the title bar is moved in the Window's TitleBar.

RadRibbonDropDownButton DropDownIndicator isn't rotated when the DropDownButtonPosition is Right and the DropDownPlacement is Right

In scenarios with more than one monitor when the RibbonWindow is run on 64bit process and e.g. using VBE7.dll, the WM_NCHITTEST message, which is sent to the window in order to determine what part of the window corresponds to a particular screen coordinate, could provide lParam with value which overflows Int32.


Available in LIB version: 2017.1.313

In some cases an InvalidOperationException is thrown when the control is loaded too early (before it is added to the visual tree). This reproduces only when the ribbon's content is minimized initially.

To work this around, you can set the IsMinimizable property of RadRibbonView to False.

To reproduce this:

• Set the RadRibbonButton LargeImage/SmallImage to a property that is larger than 16 (small image) or 32 (large image).
• Set IsAutoSize to False. This will stretch the image on all available space for the button.
• Set IsAutoSize to True. This should uniform stretch the picture so that it fills the auto size of 16 or 32 pixels. However, the image doesn't stretch, instead its Stretch is set to None, which expand the image to its original size. This leads to the clipping.

To work this around, avoid setting the IsAutoSize property. Or use smaller pictures - 16 or 32 pixels.