Steps to reproduce the issue
Components -> Smart Search -> Search filters.
Click on New to create a new filter.
Expected result
Should see a single top-level taxonomy branch list.
Clicking on one of the branch checkboxes should open the branch with a list of taxonomy items within that branch with a horizontal sliding motion.
Actual result
All taxonomy branch boxes are displayed at once and none of the checkboxes work.
Additional comments
"Empty string passed to getElementById()." in Firebug whenever a checkbox is clicked.