I’m seeing the same issue. It looks like it’s caused by class-wcpdf-admin.php:1402 sort_orders_by_numeric_invoice_number()
if ( ! is_admin() || ! $query->is_main_query() || 'shop_order' !== $query->get( 'post_type' ) && '_wcpdf_invoice_number' !== $query->get( 'meta_key' ) ) {
return;
}
is probably supposed to be:
if ( ! is_admin() || ! $query->is_main_query() || 'shop_order' !== $query->get( 'post_type' ) || '_wcpdf_invoice_number' !== $query->get( 'meta_key' ) ) {
return;
}
The incorrect AND is causing all queries to use meta_value_num, instead of just queries sorted by invoice number.
Would appreciate a quick patch for the issue. Thanks.
