I want to have an editable and a read only state of the diagram. As far as I understood the documentation, Setting IsReadOnly should disable dragging and deleting of diagram elements.
But for nodes, I have found out that it is possible to drag them around in the diagram. One curious Thing to note about this is, that while dragging the node is not visible (in contrast to the edit mode where it is visible during dragging).
Don’t know if it is relevant, but I removed the DragSelectionTool to support panning. Btw, is it possible to have the panning tool activated on a key binding (e.g. Ctrl+Left Mouse))