ure_posts_show_full_list filter allows to switch off a restriction, when user sees just posts or pages which he can edit. Such restriction is activated automatically together with posts/pages (custom post types) editing restrictions. If you wish to switch it off and show to the user full list of posts/pages use this code sample:

add_filter('ure_posts_show_full_list', 'show_full_list_of_posts', 10, 1);
function show_full_list_of_posts($full) {
   return true;

In case you need to user sees not full list of posts, but all posts from the allowed posts, without excluding posts, which he really can not edit, like to show all own posts for contributor, including those in ‘Published’ state, use another filter: ure_show_posts_which_can_edit_only_backend.