So on halloween, I got really excited because on this day I would be able to get pumpkins in my super flat survival world.
I used a looting 3 sword to kill 100 or so zombies, each with pumpkins on their heads, and none of them dropped pumpkins.

What I expected to happen:
Pumpkins dropped from the halloween zombies wearing pumpkins on their heads.

I seem to remember reading that this used to happen in an earlier version of minecraft so I can only assume it is a bug.

To recreate:
Set OS time to halloween.
Enter a minecraft world and run around with a looting 3 sword killing zombies.