I recently got the Marshmallow update on my MotoG 2nd gen (2014). I was hoping that my battery will last longer if I enable battery optimisation. But I cant seem to enable it. I can go to the battery settings and open battery optimisation. It shows Not Optimised. If I select All Apps, it shows optimising battery use for apps listed. When I go back to battery screen and then again to optimisation it still shows Not Optimised. It keeps resetting to Not Optimised. How can I make the optimisation work ?
The screenshots repeat if I go back from 3 to 1.