Hi. I just tried it using 2.5.0 in the Simulator and on my Device and it works as intended. In the quiz deck, successive presses of the A button will alternate between showing the answer and moving to the next card. Holding down A will skip through the cards.
Be aware that it’s recommended to use either the crank or the buttons. So if you’ve cranked and the card is partially animated there may be some odd behaviour, as movement of the crank will hide the answer. Dock the crank to correct this. If that’s your problem, please do let me know!