Unlocked phone, GPS active
I means you're on an security reset[ed] phone. If you forgot the pin / pattern / etc and you had to reset it with alternative access ways, like login with the google account email and password, then after every unlocking your phone sends your gps coordinates to the google account and the location settings will always reset to high precision, no matter what.

Offtopic, I'm on 4.4.1 and have no idea how to turn it off. Most suggestions are for smart lock but 4.4.1 doesn't have it or I can't find it.