When the ShapeTool is active and you execute another tool (lets say DrawTool) the UI becomes partially unresponsive. This includes the tools section and the tool settings panel.

The issue is reproducible in a NoXaml scenario (using implicit styles) and only if the Telerik.Windowls.Controls.ImageEditor.xaml ResourceDictionary is merged in the resources of the view where the control is defined (example: MainWindow.Resources).

To work this around define the ResourceDictionary in App.xaml.