[Zope] ZMI: find does not work for products

ZMI find fails to locate text in ZClasses. The following dialog fails when invoked from root folder (or Products folder, or given ZClass folder), even though "my_method" is there. Find objects of type: All types Containing: my_method ZMI find works ok everywhere else, except for ZClasses. Tested on Zope 2.4.1. -- Milos Prudek