Norton family keeps consuming allowed daily usage time, when phone is on idle mode

Norton family keeps consuming allowed usage time, when device is on idle mode (on the other way kids are on school and device is at home). This week this has been happening everyday. When looking the device norton says (after the rules update) that you are able to use device today 4 hours (which was setup as daily limit), but when launching some program on the device it prevented with the message that daily usage time is already consumed.
 

If then daily usage time is increased it works again, but problem is that somehow Norton is not able to track actual usage time when nobody is not using the device, please fix this annoying bug asap.