AT&T LG G4 Marshmallow bugs, how can I get rid of them?

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AC Question

AT&T LG G4 Marshmallow bugs

Since i updated, I can't change my alarm clock buzzer and the downtime is not automatic. I have it set from 11 am to 7 am to only notify me for priority calls. But it never goes on by itself. What's the point of having a downtime if I have to turn it ON AND OFF.