Massive SoT while sleeping?

[MG 98]

Using MiA1 android 7.1.2
Discharged 20% while i was asleep
Battery usage stats show major usage by screen only (5.5 hours screen on while i was asleep) How can the screen be on while being asleep? Sleep after inactivity is set to 1 minute.

 

[Golfdriver97]

Welcome to the forums. I would try a reboot and full charge and see if it happens again.