What does this mean to those who have an EOTech which may have this issue? Well, you should confirm your zero and if you are anywhere that temperatures swing from hot to cold throughout the year I'd highly recommend zero'ing your BUIS to POA/POI and confirmed with your EOTech sight before operation - especially if you run an EOTech on a work gun.
Or...
Buy an Aimpoint T1/2/H1/2 or Trijicon MRO or some other red dot that you do not have to worry about the zero walking at all...