When in the store, using a touchpad, horizontal scrolling can interrupt if the scrolling lands with the mouse pointer on a gap between items, when using two fingers on the touch pad scrolling side to side.

Method to reproduce:

Visit Store - Bundles
Mouse-over an item near the middle of the screen.
Using a touchpad, use two fingers to scroll to the right and left, repeatedly.
If the scrolling stop steps, even during the middle of a continued scroll, on the gap between items, the user must move the mouse icon over an item.

Needing to move the mouse in the middle of an active scroll in unintuitive.