bbPress.org

I use bbpress in Japanese.

In the bbpress search window, if you search for two or more words with double-byte spaces, no search results will appear.

I tried replacing half-width with full-width, and it worked in the wordpress search window, but not in the bbpress search window.

advice please.
thank you.

function empty_search( $query ) {
    if ( $query->is_main_query() && $query->is_search && ! $query->is_admin ) {
    $s = $query->get( 's' );
    $s = str_replace('　',' ', $s );
    $query->set( 's', $s );
    }
}
add_action( 'pre_get_posts', 'empty_search' );