Purchased 5xTrove and 5xLuckvase, Got 7 Luckvase Items and 3 Trove Items Instead

Can anyone help explain what happened here?

http://i.imgur.com/GWBfkfu.png

The last unopened one is a trove (the 7ckingmad face), but when I go to open it, it shows me the items from the Luckvase as possible drops.