Change all the things

<?php

add_filter( 'woocommerce_breadcrumb_defaults', 'jk_woocommerce_breadcrumbs' );
function jk_woocommerce_breadcrumbs() {
    return array(
            'delimiter'   => ' &#47; ',
            'wrap_before' => '<nav class="woocommerce-breadcrumb" itemprop="breadcrumb">',
            'wrap_after'  => '</nav>',
            'before'      => '',
            'after'       => '',
            'home'        => _x( 'Home', 'breadcrumb', 'woocommerce' ),
        );
}

Pour StoreFront, remplacer : add_filter( 'woocommerce_breadcrumb_defaults', 'jk_woocommerce_breadcrumbs', 20 );