After updating my Nokia 6 to Android 8.1, the screen is always awake if I do not turn off the sreen by pressing the power button. The setting "Sleep" in Display menu is set "After 1 minute of inactivity", and the setting "Stay awake" is off in the Developer options. No setting has changed since the Android 8.0 update. Is awake screen a new function of Android 8.1 or is it another disappointing bug? Please help me.