I have never see one like that. I would put the washer on it. I believe it is caused by misalignment of the striker and latch. Raising that side of the gate a little would remove the stress. You can loosen the right upper hinge/latch from the body, and move/jack the gate up a little. Fully tighten the nuts when the gate closes smoothly. The bearing surfaces wear over time, and can cause the gate to drop on that end. Continued slamming of the gate can cause the latch/hinge to stress the metal of the gate.