Cannot see the address in document all the time

I’m already input the customer address in selling > address. and click the billing address & shipping address.
but we can’t see the address in sales order or Proforma invoice, can I add a field have address.

at the same case, the purchase order can show the supplier address.
but not all the time can see the address, is any mistakes when I’m input the data?

Please help & thanks !

Did you select the customer first?