Boat only drops a boat when burnt in lava (should drop 3 wood, 2 sticks)

I was wondering if as a bug, boats could be used in lava. I couldn't place it in the lava, so I drove it in. It only works in creative as you catch fire when you're halfway in. I got the boat in, and it burned. It randomly dropped what it drops on the "shore" and the thing it dropped was a boat, not the usual 3 wood and 2 sticks. That's obviously a bug.

Also, I'm using a smooth texture pack, you'll see that in the screenshot