I need to check if it has Temp Control, but the last time it was in a different MicroWave, so it must not be that. Don't know how I can be so unlucky, And it was a mess to clean up all the glass :tiptoe: I do sometimes rinse them out with warm water, perhaps the water was not hot enough and the temp difference then caused the glass to break when it went back in the micro. I don't always do that sometimes i Use Paper Towels, but Maybe I did cause it to happen.