Order items

We use WooCommerce Email Template Customizer Premium by VillaTheme.

In automatic WooCommerce New Order admin emails, the Order Detail element sometimes renders empty. The element is present in the generated HTML as:

But no order items are printed.

At the same time, the email subtotal is rendered as 0.00, while the order total is correct. When we resend the same email manually from the WordPress/WooCommerce backend later, the order items are displayed correctly.

This suggests a timing or HPOS compatibility issue during automatic email rendering after checkout. We use WooCommerce HPOS and the issue appeared after recent WooCommerce/HPOS/order optimization changes.

Can you confirm HPOS compatibility for the Order Detail element and advise how to prevent empty order items in automatic New Order emails?