WooCommerce Multilingual - Incorrect price range when using "Filter per price" widget in secondary currencies

Overview of the issue

When using WooCommerce Multilingual’s multi-currency feature, the Filter per Price widget displays an inaccurate price range for secondary currencies. It always displays the default currency’s range.

Workaround

Please, be sure of making a full backup of your site before proceeding.

• Add the following snippet in your theme’s functions.php file:

  use function WCML\functions\getClientCurrency;
  use function WPML\Container\make;
  
  add_filter( 'rest_request_after_callbacks', function( $response, $handler, $request ) {
  
  	if (
  		wcml_is_multi_currency_on()
  		&& 'GET' === $request->get_method()
  		&& 'products/collection-data' === substr( $request->get_route(), -24 )
  		&& ! empty( $request['calculate_price_range'] )
  	) {
  		$mc = make( \WCML_Multi_Currency::class );
  		$from_currency = $mc->get_default_currency();
  		$to_currency = getClientCurrency();
  		$data = $response->get_data();
  		$data['price_range']->min_price = $mc->prices->convert_price_amount( $mc->prices->unconvert_price_amount( $data['price_range']->min_price, $from_currency ), $to_currency );
  		$data['price_range']->max_price = $mc->prices->convert_price_amount( $mc->prices->unconvert_price_amount( $data['price_range']->max_price, $from_currency ), $to_currency );
  		$response->set_data( $data );
  	}
  
  	return $response;
  }, 10, 3 );