diff -r 5f4b2dc52be7 modules/controls/src/main/java/javafx/scene/control/ContextMenu.java
--- a/modules/controls/src/main/java/javafx/scene/control/ContextMenu.java	Wed Oct 02 15:04:32 2013 -0700
+++ b/modules/controls/src/main/java/javafx/scene/control/ContextMenu.java	Tue Oct 08 16:03:06 2013 -0700
@@ -241,7 +241,14 @@
         if (getItems().size() == 0) return;
 
         getScene().setNodeOrientation(anchor.getEffectiveNodeOrientation());
-
+        //RT-27546 : The problem here is before the first show the content of the popup
+        // is not initialized yet and hence the prefWidth & prefHeight remains 0
+        // This leads to incorrect translation of anchor to screen coordinates.
+        // A call to show initializes the content. Skin is null only the very first time.
+        if(getSkin() == null) {
+            hide();
+            super.show(anchor, dx, dy);
+        }
         // FIXME because Side is not yet in javafx.geometry, we have to convert
         // to the old HPos/VPos API here, as Utils can not refer to Side in the
         // charting API.