Thanks for the response. I have three taxonomies but it’s only showing terms from the first one registered with register_taxonomy() in my functions.php. If I change the order of the register_taxonomy() function in functions.php, say swap the second with the first, then that one shows up. It looks like the post_cards_filters() function in plugins/fusion-builder/shortcode/fusion-post-cards.php can only handle one taxonomy.
The other issue is that the filters only show terms that are in the results set. Don’t understand that logic – the filter list show should show *all* the terms.