The lid may still be extremely hot.
If it concentrates heat into a relatively small area, that section of the glass can become much hotter than the surrounding surface.
That’s unnecessary thermal stress—and there’s simply no reason to take the chance.
Never Assume the Glass Is Too Tough to Break
This is probably the biggest misconception about glass-top stoves.
Chemistry
They’re made to handle everyday cooking, so it’s tempting to assume they’re basically bulletproof.
They’re not.
A glass
