woothemes/woocommerce — pull request #6239 by vlandfair (2014-09-12 05:02:26+00:00)
Title: Minor Fix: Fixed Product Tag Arguments

Product Tags are labeled as non-hierarchical, but they are labeled with hierarchical labels instead of non-hierarchical labels. On the back-end everything shows up and works as intended. WordPress just ignores the mislabeled args and uses the correct ones by default. Always good to follow register_taxonomy() args :p.