Order complete email doesn’t have track & trace code

Hi,

In some of our “order complete” emails the T&T code is not added.
I found out the problem but I don’t know yet how to solve it.

We are working a lot with bulk edit and often don’t even open the order in WordPress. So we select the orders and perform the actions in bulk, a POSTNL code is being made and we can print labels as well, but the barcode is not added in the order list(even though it is added to the order).
In this case when we change the order status to “complete” the client gets an email without the code.

But if I first open the order, the code is added in the order overview and if I change the status to “complete”(in bulk) the emails are being send with the T&T code.

I hope you understand the