Index: /trunk/src/org/openstreetmap/josm/actions/mapmode/ParallelWayAction.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/mapmode/ParallelWayAction.java	(revision 4148)
+++ /trunk/src/org/openstreetmap/josm/actions/mapmode/ParallelWayAction.java	(revision 4149)
@@ -157,4 +157,5 @@
             w.setHighlighted(true);
         }
+        mv.repaint();
     }
 
@@ -175,4 +176,5 @@
         sourceWays = null;
         referenceSegment = null;
+        mv.repaint();
     }