If you delete a RadDiagramShape property using the SettingsPane (e.g. StrokeThickness) and then you try to call RadDiagram.Save() method, the generated string is not in the correct format. The deleted property is set to Auto in the string, while it should be set to 0.
Hence, if you try to load the same string, the RadDiagram throws FormatException.

Available in LIB version: 2014.3.1208

RadContextMenu is set on DiagramShape. On touch device, you cannot open the ContextMenu with Tap and hold gesture.

Available in LIB version: 2014.3.1409

XAML connections' Source and Target bindings don't work inside tab control if the diagram is not in the first TabItem.

There's a new attached property in the DiagramBehaviors - NameScopeProvider in WPF. It can be set to the RadDiagram by given element that holds the current NameScope (it's usually the root element - Window or UserControl). 

Example:
<telerik:RadDiagram x:Name="diagram"
telerik:DiagramBehaviors.NameScopeProvider="{Binding ElementName=root}"       ... />

The AllowPaste property does not work in MVVM scenario. The DeserializeNode() method in the GraphSource is called.

Can't paste a connection in a diagram different than the original one - the one in which the copy operation was executed.

On graphSouce change the graphSource's collectionChanged event is not detached and because of this the diagram will still create shapes if you add items to it.

Fixed in LIB version: 2014.2.0804

An Exception is thrown when a connection is added into a container shape in an MVVM scenario. More specifically, when you create a new LinkViewModelBase<T> and use the AddItem method of the ContainerNodeViewModelBase<T> to add it inside the container.

Add some connection points to polyline connection. Move them. Then Select all with Ctrl + A. You will notice the Blue multiselection geometry is not with the correct geometry - it should be over the connection but it is not.

Fix is available in LIB Version 2014.3.1208.

 Adding RadDiagramConnection in RadDiagramContainerShape doesn't work correctly in some cases:

-The container shape bounds increase each time it is expanded, when the routing of the diagram is enabled (RouteConnections=True) and you have a connected RadDiagramShapes placed in a collapsible RadDiagramContainerShape, 

-When you try to connect shapes placed in a RadDiagramContainerShape the RadDiagramConnection is not added in the container items.

-When you delete a RadDiagramConnection that is placed inside a RadDiagramContainerShape with the Delete key and then undo (Ctrl+Z) the deletion, the shape is added in the diagram items instead of the container items collection.

Fixed in LIB version: 2014.2.0825

IsZoomEnabled property is not respected when the diagram is zoomed with touch/pinch gesture

Available in LIB version: 2014.3.1409

The RadDiagramContainerShape size expands when a connection is added in its Items and then a connection point is added with Ctrl+Click.

The fix is available in LIB Version 2014.3.1312.

The manipulation adorner is misplaced after dynamic theme change if the diagram's position is different than 0, 0


Available in LIB version: 2014.3.1110

SettingsPane's StrokeDashArray Combo in the Style tab is not updated correctly after save and load of diagram. 

Use a diagram, use the settings pane to set non-default value of the shape's strokedasharray.

Save the diagram. Open new solution. Load the saved diagram.

Open the settings pane on the shape you have edited before. Notice the ComboBox is not updated with the actual strokedasharray of the selected shape.

Available in LIB version: 2014.3.1402

ConnectionManipulationCompleted event does not fire when a shape is rotated more than 45 degrees and custom connector is used.

The fix is available in LIB Version 2014.3.1305.

Setting IsConnectorsManipulationEnabled on a shape doesn't hide/show the Connectors immediately - you have to force a VisualState update. 

The fix is available in LIB Version 2014.3.1312.

When using SettingsPane on connection, the source and target cap types combos can be misaligned. For example when source is None and target is arrow 1.

Available in LIB version: 2014.3.1319

If you manually remove a connection from a container (Source and Target are still in the container) and then drag this container in another one an exception will be thrown.

The fix is available in LIB Version 2014.3.1326.

IsPanEnabled property is not respected when the diagram is panned with touch/pan gesture

Available in LIB version: 2014.3.1409

ContainerShapes has connections connecting shapes in it.

RouteConnections is True.

After Expand Collapse - the ContainerShape has wrong size.

The bug is introduced in Q1 2015.

Available in LIB version: 2015.1.1603