this not only a hue issue but it happens with other bulbs too. I have a drop cam so whenever power goes off and I am not home, I get an email, wait until the camera is connected then turn off all the lights with one group command. I have a group called everything so I can turn off all the bulbs since I have three different brands. since you only have hue bulbs, you don't have to setup a group. just tell it to turn off all hue.
when power goes off, the bulbs think you turned them off manually so when power comes back on, they think that was manual too so they come and stay on. how are they supposed to know when you turn them off manually or there is a power outage?