MAJOR BUG in 6.6.1 version – Listing categories cannot be selected.

Just upgraded from 6.6.0, now users cannot select listing category.

The listing category section displays just the parent categories, but not the sub categories.

It also displays 3 empty sections called “sub category”, “sub sub category”, “sub sub sub category” (even though I have only 2 levels of categories – parent and sub).