Index: /trunk/src/org/openstreetmap/josm/gui/history/TagTableCellRenderer.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/history/TagTableCellRenderer.java	(revision 17903)
+++ /trunk/src/org/openstreetmap/josm/gui/history/TagTableCellRenderer.java	(revision 17904)
@@ -67,4 +67,5 @@
                     setBorder(BorderFactory.createMatteBorder(0, 0, 0, 2, model.getVersionColor(primitive)));
                 }
+                break;
             default: // Do nothing
             }