keystone-classic: localFile .format property ignored by Admin UI

Hi,

I’m having the same problem as this user: https://groups.google.com/forum/#!searchin/keystonejs/localFile$20format/keystonejs/KVKsu7eywek/851iYDO4pzsJ

The format property in the following example:

var Photo = new keystone.List('Photo',{track:true});

Photo.add({
    name: { type: Types.Key, required: true, index: true },
    photo: {
          type: Types.LocalFile,
          dest: './public/data',
          prefix: '/photo',
        allowedTypes: [
            'image/jpeg', 'image/png'
        ],
        format: function(item, file) {
            console.log('format()');
            return '<img src="/data/' + item.id + '.' + file.extension + '" style="max-width: 300px">';
        }
      }
});

… inserts no <img> tag at all in the detail page of an ‘image’ item in the Admin UI. Nor is the console message format() logged. I suspect this property is currenty broken. Currently running Keystone.js 0.3.10.