edit

assets/lib/manage/main.js

@@ -1141,7 +1141,7 @@ function autocomplete_del(e, id, value)
 {
 	e.parent().parent().remove();
 	autocomplete_value[id].remove(value);
-	var len = autocomplete_value.length;
+	var len = autocomplete_value[id].length;
 	if (len < 1 && !($('#del_' + name).length)) {
 		$("#" + id + '_show').append('<input type="hidden" name="'+name+'[]" id="del_'+name+'" value="-1" />');
 	}