Healing a zombie villager in the nether continuously crashes the game

I have a villager converter in the nether where I zombify a villager, shoot it with a weakness tipped arrow and then I heal it with a golden apple. After a few minutes of the zombie shaking it the game crashes and whenever I try to load back into the world it crashes. The world is purely survival, the zombie villager was in a minecart when I tried to cure it, and the zombie villager was a librarian.