catalog:findPhotos() won't search collapsed stacks

catalog:findPhotos() won't search photos buried in collapsed stacks. See here for details:

http://feedback.photoshop.com/photoshop_family/topics/sdk_catalog_findphotos_ignores_colla psed_stacks?rfm=1

I had encountered oddnesses now and then debugging Any Filter, but only now figured this out.  Sigh.