using gettext filter causes add-ons to dissappear when updating the product

[Valentina R]

Reported here by multiple users.

Using this code snippet, causes the product add-ons to be deleted/removed from the product when updating the product:

‌

add_filter( 'gettext', 'change_woocommerce_return_to_shop_text', 20, 3 );
function change_woocommerce_return_to_shop_text( $translated_text, $text, $domain ) {
    switch ( $translated_text ) {
        case 'Return to shop' :
            $translated_text = __( 'Return to ABC Home Page', 'woocommerce' );
            break;
    }
return $translated_text;
}

But wrapping it like this, does not:

add_filter( 'gettext', 'change_woocommerce_return_to_shop_text', 20, 3 );
function change_woocommerce_return_to_shop_text( $translated_text, $text, $domain ) {
  if ($domain == 'woocommerce') {
    switch ( $translated_text ) {
        case 'Return to shop' :
            $translated_text = __( 'Return to ABC Home Page', 'woocommerce' );
            break;
    }
  }
return $translated_text;
}

Any idea what is happening and how can it be prevented?