Workaround Fix: recurrence event

<?php

/*
 * Patch: recurrence not showing when events_list is filter by category
 */
add_filter('em_event_save','my_event_save', 100, 2);
function my_event_save( $result, $EM_Event ){
	global $wpdb;

	if ( !empty( $EM_Event->get_recurrence_set() ) ){
		$event_type = "single";
		$wpdb_results = $wpdb->query ( $wpdb->prepare("UPDATE ". EM_EVENTS_TABLE ." SET event_type = %s  WHERE event_id=%d", array($event_type, $EM_Event->event_id) ) );
	}

	return $result;
}