That's some serious injuries, all for something that should prevent that. Just for a test, I took a block of rigid foam and tried to block the door. It reversed when it fist hit the foam and there was no damage to the foam block. In other words, it did what I would expect. Next, I tried to block it with my hand. It didn't seem to want to reverse on contact. It took quite a bit of force to finally get it to reverse. Arms and hands, especially those of small children, are a lot more pliable than a block of foam, and now I agree, that there is a problem with the door sensor be it mechanical or programmable.
Don (ezdays) Day