Flaking/cracked OHR sensor

Anyone else encounter flaking/cracked plastic on the OHR sensor? It was never dropped or impacted but cracks started forming and now a piece actually flaked off yesterday. Normal use running/biking, removed during showers, rinsed and dried after workouts

Edit: Picture won't upload in correct size. See here http://imgur.com/8PfGanc.jpg ciq.forums.garmin.com/.../1230611.jpg