Halo Wars 2 Blitz Beta - can't cycle deck

During the Blitz Beta I’ve been attempting to cycle the deck of cards in Tutorial. Whenever I try to do this, however, it doesn’t work! I also appear to be stuck selecting the far-left or far-right card which, in most cases, I can’t use anyway…

Use the “X” button works fine with giving troops orders, but this effecitvely makes the beta unplayable if I can’t proceed.

The tutorial doesn’t require you to cycle, so it is disabled until the deck unlocked phase.