diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/LeftTasksTree.java b/ganttzk/src/main/java/org/zkoss/ganttz/LeftTasksTree.java
index 042e634df..e026a23dc 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/LeftTasksTree.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/LeftTasksTree.java
@@ -233,7 +233,7 @@ public class LeftTasksTree extends HtmlMacroComponent {
 
     /**
      * This class is a workaround for an issue with zk {@link Tree}. Once the
-     * tree is created, a node with more children can't be added. Only the top
+     * tree is created, adding a node with children is troublesome. Only the top
      * element is added to the tree, although the element has children. The Tree
      * discards the adding event for the children because the parent says it's
      * not loaded. This is the condition that is not satisfied:<br />
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/OrderElementTreeController.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/OrderElementTreeController.java
index d6edec0dd..f6804f697 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/OrderElementTreeController.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/OrderElementTreeController.java
@@ -119,8 +119,16 @@ public class OrderElementTreeController extends TreeController<OrderElement> {
                     public void found(OrderElementTemplate template) {
                         OrderLineGroup parent = (OrderLineGroup) getModel()
                                 .getRoot();
-                        orderModel.createFrom(parent, template);
+                        OrderElement created = orderModel.createFrom(parent,
+                                template);
                         getModel().addNewlyAddedChildrenOf(parent);
+                        if (!created.getChildren().isEmpty()) {
+                            // due to a bug of zk Tree, the children of a newly
+                            // added element are not shown. Forcing reload.
+                            // See comments at
+                            // org.zkoss.ganttz.LeftTasksTree.DeferredFiller
+                            Util.reloadBindings(tree);
+                        }
                     }
                 });
     }