trust-form.php
2341行目
if ( isset( $_POST[‘send-to-confirm’] ) && isset($this->validate[0][$key][‘e_mail_confirm’]) && $this->validate[0][$key][‘e_mail_confirm’] != ” ) {
を
1797行目のif文を参考に
if ( ( isset( $_POST[‘send-to-confirm’] ) || isset( $_POST[‘send-to-confirm_x’] ) || ( isset($_POST[‘mode’]) && $_POST[‘mode’] == ‘confirm’ ) ) && isset($this->validate[0][$key][‘e_mail_confirm’]) && $this->validate[0][$key][‘e_mail_confirm’] != ” ) {
で修正したら、期待通りに動いた。