Index: library/nx/nx.tcl
===================================================================
diff -u -rf61ee3dfc17d8cf04a0dc9ada9cb0f939514a511 -r76454eeb255e395a6a19345d558e0e96a9c47159
--- library/nx/nx.tcl	(.../nx.tcl)	(revision f61ee3dfc17d8cf04a0dc9ada9cb0f939514a511)
+++ library/nx/nx.tcl	(.../nx.tcl)	(revision 76454eeb255e395a6a19345d558e0e96a9c47159)
@@ -1556,6 +1556,11 @@
 	  lappend options slot=[::nsf::self]
 	}
       }
+    } elseif {[:info lookup method assign] ne "::nsf::classes::nx::VariableSlot::assign"} {
+      # In case the "assign method" has changed, forward variable
+      # setting in configure (e.g. called during initialization of
+      # object parameters) to the slot.
+      lappend options slot=[::nsf::self]
     }
     if {[info exists :arg]} {lappend options arg=${:arg}}
     if {${:required}} {