Index: trunk/src/org/openstreetmap/josm/gui/tagging/TagCellEditor.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/tagging/TagCellEditor.java	(revision 4091)
+++ trunk/src/org/openstreetmap/josm/gui/tagging/TagCellEditor.java	(revision 4092)
@@ -94,4 +94,8 @@
         currentTag = (TagModel) value;
 
+        // no autocompletion for initial editor#setText()
+        if(autoCompletionList != null) {
+            autoCompletionList.clear();
+        }
         if (column == 0) {
             editor.setText(currentTag.getName());