When publishing posts after the order is completed (with Forms Commerce) template layouts assignment to those posts are lost

Symptoms

When you submit posts related to a payment with Toolset Forms Commerce and publish those posts only after the order is completed, the assignment of the template layouts to these posts will be lost.

Workaround

This issue happens only if you update a single Order directly.

If an Order is updated from the list of orders found on the WooCommerce -> Orders page, as a bulk action, the issue is resolved and the template layout will stay assigned.