Not really - a little while in the drying rack, maybe. It seems to be all inside the tube, which would seem so indicate something to do with the hot water, or something. I wondered if it were the water being too hot - but figure that that can't be it, as the top part, which I put water into first from the kettle to cool down to 80 deg, isn't cracked or scratched at all. I'm hoping its just a one off issue.