I'm having my dealer look into this as well as I have two different behaviors in our '11 Outback and my new Legacy.
The outback (and every other car I've ever owned with Homelink works with no acc)
The legacy requires acc to be on
Security makes sense, but it's a departure from how it's operated in the past.
2013 CBP Legacy 2.5i Premium
2011 ABP Outback 2.5i Ltd (now wife's)
Past: 99 Impreza L, 04 WRX Wagon, 05 Legacy GT, 06 WRX Wagon, 05 Legacy GT Ltd, 08 STI