^^&&^^

Edit File: bbpress.cls.php

<?php
/**
 * The Third Party integration with the bbPress plugin.
 *
 * @since		1.0.5
 */
namespace LiteSpeed\Thirdparty;

defined( 'WPINC' ) || exit;

use \LiteSpeed\Router;

class BBPress
{
	/**
	 * Detect if bbPress is installed and if the page is a bbPress page.
	 *
	 * @since 1.0.5
	 * @access public
	 */
	public static function detect()
	{
		if ( function_exists( 'is_bbpress' ) ) {
			add_action('litespeed_api_purge_post', __CLASS__ . '::on_purge' );//todo
			if ( apply_filters( 'litespeed_esi_status', false ) ) {// don't consider private cache yet (will do if any feedback)
				add_action( 'litespeed_control_finalize', __CLASS__ . '::set_control' );
			}
		}
	}

/**
	 * This filter is used to let the cache know if a page is cacheable.
	 *
	 * @access public
	 * @since 1.2.0
	 */
	public static function set_control()
	{
		if ( ! apply_filters( 'litespeed_control_cacheable', false ) ) {
			return;
		}

// set non ESI public
		if ( is_bbpress() && Router::is_logged_in() ) {
			do_action( 'litespeed_control_set_nocache', 'bbpress nocache due to loggedin' );
		}
	}

/**
	 * When a bbPress page is purged, need to purge the forums list and
	 * any/all ancestor pages.
	 *
	 * @since 1.0.5
	 * @access public
	 * @param integer $post_id The post id of the page being purged.
	 */
	public static function on_purge($post_id)
	{
		if ( ! is_bbpress() ) {
			if ( ! function_exists( 'bbp_is_forum' ) || ! function_exists( 'bbp_is_topic' ) || ! function_exists( 'bbp_is_reply' ) ) {
				return;
			}
			if ( ! bbp_is_forum( $post_id ) && ! bbp_is_topic( $post_id ) && ! bbp_is_reply( $post_id ) ) {
				return;
			}
		}

// Need to purge base forums page, bbPress page was updated.
		do_action( 'litespeed_purge_posttype', bbp_get_forum_post_type() );
		$ancestors = get_post_ancestors( $post_id );

// If there are ancestors, need to purge them as well.
		if ( ! empty( $ancestors ) ) {
			foreach ( $ancestors as $ancestor ) {
				do_action( 'litespeed_purge_post', $ancestor );
			}
		}

global $wp_widget_factory;
		if ( bbp_is_reply( $post_id ) && ! is_null( $wp_widget_factory->widgets[ 'BBP_Replies_Widget' ] ) ) {
			do_action( 'litespeed_purge_widget', $wp_widget_factory->widgets[ 'BBP_Replies_Widget' ]->id );
		}
		if ( bbp_is_topic( $post_id ) && ! is_null( $wp_widget_factory->widgets[ 'BBP_Topics_Widget' ] ) ) {
			do_action( 'litespeed_purge_widget', $wp_widget_factory->widgets[ 'BBP_Topics_Widget' ]->id );
		}
	}
}