Index: trunk/src/org/openstreetmap/josm/actions/mapmode/ExtrudeAction.java
===================================================================
--- trunk/src/org/openstreetmap/josm/actions/mapmode/ExtrudeAction.java	(revision 17460)
+++ trunk/src/org/openstreetmap/josm/actions/mapmode/ExtrudeAction.java	(revision 17461)
@@ -329,4 +329,6 @@
         map.keyDetector.removeKeyListener(this);
         map.keyDetector.removeModifierExListener(this);
+        this.selectedNode = null;
+        this.selectedSegment = null;
         super.exitMode();
     }