When on the Store page for Packs, the scrollable list for sets is inversely controlled from all other instances of scrolling when using a mouse (up goes right). When using a trackpad it's correct (down goes right).

I can replicate this on two different PCs. The PC with the trackpad also behaves the same when a mouse is used (correct with the trackpad, incorrect with the mouse).

PC

Mice scroll up to go right on the Store page Packs set list.

I would expect the behavior to match all other scrolling in the game, down goes right.