Why? Good question. I wish I knew. But, until the person in charge of Template Management on the blogger team wakes up and realizes the error in this way, I have a work-around. And, thankfully, it is a simple one.
Every time you edit a gadget that had no title, or when you create a new gadget that you don't want a title on, put this code in the title field:
<h2></h2>For the time being we have fooled the gadgets to believe there is a title in the field.
I hope they realize that this behaviour is just plain silly and put it back the way it was.
