In orders list template (/components/com_virtuemart/views/orders/tmpl/list.php) is issue, when no orders are displayed.
In such case two DIVs are not closed correctly, which causes styling issues.
The original code at the end of file is like this
</div>
</div>
<?php } ?>
and should be like this
<?php } ?>
</div>
</div>
Thank you - reported to Max