Input_Boolean turned off without a logbook entry

Hoping someone can help me figure this out. I have an Input_Boolean that automatically turns on at night and off in the morning. This boolean prevents my motion lights from turning on. I woke up last night and my motion lights were on and so I looked at the app and the Boolean was turned off. I turned it back on and went to bed. In the morning looking at the logbook there is no entry of it turning off. What could cause this?