Barcode Scan on Pick up

Has anyone else come across this.  Had a buyer pick up an item yesterday and she showed me her barcode to scan for the pick up.  All good! (Cash on pick up payment)

 

today I had someone pick up an item, paid via PayPal but there was no barcode on his purchase for me to scan.  

does anyone know when this was introduced? Couldn't find anything under help or announcements.