Question [Q] Back button randomly activates on low battery

When my gs3 is on low battery (<15%), the back button seems to randomly activate

The web browser keeps going back, and I am constantly kicked out of programs for no reason.

I am running cyanogenmod 10.2.1-d2spr. Build date 2/3/2014

Does anyone know of a remedy to this problem? Could this possibly be some sort of battery saving feature that I have accidentally enabled?