BBpress Flush Transients

/**
 * Flush out bbpress dropdown of forum list transient on save/update of forum posts
 *
 * @hooked save_post
 */
function prefix_flush_posts_transients() {
    delete_transient( 'prefix_bbpress_dropdown_forum_list' );
}
add_action( 'save_post', 'prefix_flush_posts_transients' );