Hi, did you put that code in a post, or did you use do_shortcode() to place it in your template?
The reason I ask is that if you insert it into a post the ‘current’ posts is only that post.
If you put it in the template, it should show all of the posts WP has selected (WP places them in a global variable called $wp_query). An example of this is the sidebar widget, which should show all the posts being displayed if you use “current”.