In the past when people have asked me about bisquing ware with glass in it, I have told them confidently, "I have never had that happen." Even in my recent post, "Green Bottle Glass" I said, "The glass does not melt at all in the bisque, it anneals a little, but doesn't melt." Well, I withdraw my comments.
I knew there was something awry when I picked up a piece recently bisqued and saw this:
So, perhaps I am not really eating my words, but chewing on what to say in the future!