The MX keyboard backlight sometimes starts to turn itself on and off. (it's not a fast flashing) It seems as though something is activating the sensor but there is nothing moving or touching it. If I turn the backlight all the way off with the F key control and then turn it back on, it will function normally for awhile. But eventually it will return to this behavior. Power cycling it with the switch also works. The room is dim to dark at all times. This occurs regardless of charge level or if the keyboard is plugged into the usb cable or independent.