Index: /trunk/src/org/openstreetmap/josm/data/osm/DataSet.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/osm/DataSet.java	(revision 2437)
+++ /trunk/src/org/openstreetmap/josm/data/osm/DataSet.java	(revision 2438)
@@ -780,4 +780,5 @@
     private void reindexWay(Way way) {
         ways.remove(way);
+        way.updatePosition();
         ways.add(way);
     }