I had the same experience months ago, the built in battery usage indicator always had it at the top, and it was a confirmed issue that was "resolved" in future

I had the same experience months ago, the built in battery usage indicator always had it at the top, and it was a confirmed issue that was "resolved" in future builds. Decided it was best for Facebook and myself to depart for the new year. Too much time, and battery usage wasted. Removed app, deactivated account, 6S lasts for almost two days.