By default, posts will be visible under filters list of Live Filter.
To hide these posts at page load, Please add this code to Custom JS field in Content Views >> Settings page:
/* Live Filter – Hide results at beginning */ var view_id="VIEW_ID",$view=$("#pt-cv-view-"+view_id),$pagination=$(".pt-cv-pagination-wrapper [data-sid="+view_id+"]").parent();new RegExp($(".cvp-live-filter").map(function(){return $(this).data("name")}).get().join("|")).test(window.location.search)||($view.hide(),$pagination.hide());
Please replace VIEW_ID with ID of your View. Also, ensure there is NO space between quotes.
Best regards,