Before I found this solution, my quick settings menu was buggy, not registering any change I made , and also do not disturb was not working . The solution is to reset phone settings , only phone , not factory reset . You will loose all your settings, but everything should start to work as expected . The only great loss for me is the wifi password list that it's wiped . Everything else , pictures , apps data , contacts etc... Aren't touched . Also the pocket mode that has no option in oxigen os 12 , stay on ( I had it on before in oxigen 11)