fixes in Path Handler

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Extensions/PathHandlerExtension.cs

@@ -754,6 +754,7 @@ namespace ICSharpCode.WpfDesign.Designer.Extensions
 		int _movingDistanceY;
 		public void KeyDownAction(object sender, KeyEventArgs e)
 		{
+			if (_selectedThumbs.Count > 0) {
 				if (IsArrowKey(e.Key)) {
 					if (operation == null) {
 						SetOperation();
@@ -774,6 +775,7 @@ namespace ICSharpCode.WpfDesign.Designer.Extensions
 				if (operation != null)
 					MovePoints(_movingDistanceX, _movingDistanceY, false);
 			}
+		}
 
 		public void KeyUpAction(object sender, KeyEventArgs e)
 		{