I found a work around.
Go to Plugin Folder and navigate to includes/templates.php
Change following function:
function stm_add_listing_inventory($atts)
{
stm_listings_load_template('filter/inventory/main');
}
add_shortcode('stm_add_listing_inventory', 'stm_add_listing_inventory');
to
function stm_add_listing_inventory($atts)
{
ob_start();
stm_listings_load_template('filter/inventory/main');
$output = ob_get_clean();
return $output;
}
if (!is_admin()) {
add_shortcode('stm_add_listing_inventory', 'stm_add_listing_inventory');
}
You must also be seeing listing page loading in admin panel. I have included workaround for that too in above code.