The only thing they fixed was the ordering problem. The update that brought us the new cookbook also broke the cookbook so that you could only order base dishes from friends, unless you already owned the dish you were ordering. Which is a game killer, so I suppose they had to get on it instead of stalling. Now you can order variants.
Push notifications still don't work.
Orders still randomly go to the counter instead of the fridge.
Crashes are still frequent.
I think they've been putting more effort into thwarting hackers than fixing actual bugs in the code. They made the toxin drop rate too low, the recharging rate way too low, and the cooking times too high and the specialty items too expensive. When you can easily blow through $5 (real money) worth of toxins in a few minutes and not really accomplish much, you pretty much push people to hack instead. If they hadn't gotten too greedy, they would be making more money because people wouldn't be hacking or refusing to give in to the hard sell approach. I just spent $5 on a freemium game with a soft sell approach. Got me hooked, then offered two specialty items for real money. You can play the game fine without either, but over time the lust over takes you, and you buy—but without feeling bullied or robbed. Anyway, that's my theory on why so many updates don't seem to actually fix real bugs and why things like new dishes seem to be haphazardly thrown together.