Stop "No Interruptions" Mode from Occurring without Set-Up

A

AC Question

I have an LG G3, Android version 5.0.1
My phone regularly puts itself into "No interruptions" mode without direction or set-up from me, and it kills all alarms. I hate this feature and need it disabled, but I can't get it to stop turning on.

I have to instead wake up sometime in the night and go in to Settings\Sound & notification\ Sound profile and change "No interruptions" to "Sound" in order to make sure my alarm will go off.

I don't have any dates/times set-up for no interruptions, and it started doing this after the 5.0.1 update, despite having never used the feature before.