Instict 2x low power mode is still counting steps, floors climbed, even still getting software updates

What's the deal with low power mode on the Instinct 2x. On my original Instinct 1, low power mode was so bare bones it only showed the time/date and that's it. My Instinct 2x is still clearly reading sensor data as it shows my steps and floors climbed every day. I even noticed it did a software update all while low power mode was active! This to me doesn't seem right if you want to preserve maximum battery life.