Sidebar left woocommerce

Hi

I'd like to be able to use the left sidebar on all woocommerce pages only and found you document
WooCommerce function
https://docs.generatepress.com/article/sidebar-layout/#woocommerce

It's had some strange results, please see URL.

I used this
add_filter( 'generate_sidebar_layout', function( $layout ) {
// If we are on a woocommerce page, set the sidebar
if ( function_exists( 'is_woocommerce' ) && is_woocommerce() ) {
return 'both-left';
}

// Or else, set the regular layout
return $layout;
} );

Did i do something wrong?

Many Thanks
Scott