WooCommerce shortcode “order” has no effect on order

We are trying to display our tours at one page in a specific order. We are using the following shortcode [product_category category="interrail" columns="3" per_page="30" orderby="date" order="asc"]

The order by function works fine, but no matter what we put in order function order="asc" the tours are always listed in the same way. Perhaps there is a conflict with the theme we are using.

Hopefully someone can help us to find a solution.