Same problem here too. It’s showing when you don’t use the posts.php template.
[catlist name=your_catlist_name template=something_here_but_not_the_template customfield_display=your_custom_field_name ]
For me it’s seems that this line in posts.php don’t work: $lcp_display_output .= $this->get_custom_fields($this->params['customfield_display'], $single->ID);
I downgraded as well.
