Index: Lib/lib-tk/Tkinter.py
===================================================================
--- Lib/lib-tk/Tkinter.py	(revision 68104)
+++ Lib/lib-tk/Tkinter.py	(working copy)
@@ -1067,6 +1067,12 @@
         """Return the Tkinter instance of a widget identified by
         its Tcl name NAME."""
         name = str(name).split('.')
+        if '#' in name[-1]:
+            # This is a cloned menu, only the final widget in the split list
+            # is needed to retrieve it. Cloned menus have one or more '#'s
+            # where there would be '.'s instead, to indicate they are cloned
+            # menus.
+            name = (name[-1].split("#")[-1], )
         w = self
 
         if not name[0]: