Notification volume
Hello. Problem with notification volume. The volume changes spontaneously. Notification sounds become quieter. Also, the sound of the screen lock becomes quieter when you press the power key. If volume control is selected with buttons, then the volume is not controlled by the scale in the control panel and vice versa. At the same time, everything is in order with the volume of the ringtone. The problem is common. There are tons of discussions on this issue online.