Index: /trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/StyledMapRenderer.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/StyledMapRenderer.java	(revision 9031)
+++ /trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/StyledMapRenderer.java	(revision 9032)
@@ -1517,4 +1517,7 @@
             }
         }
+        if (w.isClosed()) {
+            path.closePath();
+        }
         return path;
     }
Index: /trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/relations/Multipolygon.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/relations/Multipolygon.java	(revision 9031)
+++ /trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/relations/Multipolygon.java	(revision 9032)
@@ -229,4 +229,7 @@
                     }
                 }
+            }
+            if (nodes.size() >= 3 && nodes.get(0) == nodes.get(nodes.size() - 1)) {
+                poly.closePath();
             }
             for (PolyData inner : inners) {