We absolutely encountered this same problem with our 2012 Dometic 3 way right off the bat, not after the fridge was a couple of years old. I was shocked that an RV fridge would be made with such a weak little plastic latch. It kind of ticked me off. I just made a strap out of two 1" Velcro strips that go across the bottom half of the door. They are held at each end by small eye bolts. We cinch it up before we travel, they hang loose out of the way on either side of the fridge while camped. The door has never come open with this simple strap.