jQuery v1.8.3 (from WP 3.5) causing issues?

jQuery v1.8.3 (from WP 3.5) causing issues?

I got this test in my Chrome browser:

  1. alert (Thesaurus.options.containers + '|' + $.find(Thesaurus.options.containers).length + '|' + $.find('#content').length);

When I load the page I got this output:

  1. #content|0|1

What is that? Also many other functions does not get properly executed within the jQuery based code...