I wouldn't be surprised if it did. I'm also using an always-home iPad Mini for this, and I don't often use away-from-home control, but I am trying to use presence, which also requires Home "hub" (iPad or Apple TV). I had the hardest time getting this to reliably update for me, as I noted a few months ago in another thread. "Using" the hub iPad at least once or twice a day, even just unlocking it, seems to have been enough to mitigate this problem for me, or at least I don't notice it now as much as I did when it was new, and that's the only difference I can think of.