Weird behavior of getData()

Demo page: http://cornellcoursereview.meteor.com/

My code:

if (Meteor.isServer) {
  SearchSource.defineSource('courses', function(searchText, options) {
    var options = {
      fields: {'catalog':1, 'titleLong':1, 'catalogNbr':1},
      limit: 10
    };

    if(searchText) {
      var regExp = buildRegExp(searchText);

      var selector = {$or: [
        {titleLong: { $regex: regExp } },
        {catalog: { $regex: regExp } },
        {catalogNbr: { $regex: regExp } }
      ]}

      return Courses.find(selector, options).fetch();
    } else {
      console.log("couldn't find anything that suits the query");
      console.log("query:", searchText);
      return Courses.find({}, options).fetch();
    }
  });

  function buildRegExp(searchText) {
    var words = searchText.trim().split(/[ \-\:]+/);
    var exps = _.map(words, function(word) {
      return "(?=.*" + word + ")";
    });
    var fullExp = exps.join('') + ".+";
    return new RegExp(fullExp, "i");
  }
}

query = "intro algo" matches with "introduction to analysis of algorithms" If you go to the demo url, you will see that although the document is found, it's rendered in a weird way.

Type into algo first, then press any function key like alt, cmd, or ctrl. You will see that the result disappears and appears intermittently.

Set breakpoints inside getData() and you will see that it returns an empty object even though there's fetch data.

meteorhacks / search-source

Weird behavior of getData() #15