So I've narrowed it down, to when this is actually happening.
So I use my timers in the morning to get out the door on time. Because my screen is set to time out after two minutes, and I set my timer until I leave the house in 5 minute intervals; for this reason I'm constantly tapping the screen at the two minute mark so I can "literally" see the time going down.
So when the issue seems to be happening is when the timer is going and the phone is unlocked, and the screen on, also in most instances Apple Music in the background. So for whatever reason, the time is equating turning itself off with the screen being unlocked and on.
Makes no sense, but that's what's happening.