Ticket #12134: 12134.diff

django/contrib/admin/widgets.py

@@ -211 +211 @@
     def __deepcopy__(self, memo):
         obj = copy.copy(self)
         obj.widget = copy.deepcopy(self.widget, memo)
-        obj.attrs = self.widget.attrs
+        obj.attrs = self.widget.attrs.copy()
         memo[id(self)] = obj
         return obj