I think this issue is merely with the email reporting but I wanted to bring it to Paizo's attention nonetheless.
I received an email on February 5th letting me know that "Plague of Shadows" is shipping out with the order #1614676 that is being prepared. Inside the body of the email it correctly listed the contents:
This order contains the following items:
1 x Kobold Quarterly 16 Print Edition @ 0.00 = $0.00
1 x Pathfinder Tales: Plague of Shadows Print Edition @ 8.49 = $8.49
1 x Pathfinder Adventure Path #42: Sanctum of the Serpent God (Serpent's Skull 6 of 6) (PFRPG) Print Edition @ 13.99 = $13.99
This is the shipment list and pricing I expected. I received another email today indicating that the order was pending shipment by the end of the week but the contents of the order are listed as:
The following products are included in this shipment:
1 x Kobold Quarterly 16 Print Edition
1 x Pathfinder Tales: Prince of Wolves Print Edition
1 x Pathfinder Tales: Plague of Shadows Print Edition
1 x Pathfinder Adventure Path #42: Sanctum of the Serpent God (Serpent's Skull 6 of 6) (PFRPG) Print Edition
I already own "Prince of Wolves" so I clicked the link contained in the email to view the order and discovered that the order record itself does not contain this entry: 1 x Pathfinder Tales: Prince of Wolves Print Edition
So it looks like the order, viewed through my account, is in fact correct but the email package list is wrong.