Steps to Reproduce:

1. Spawn a villager
2. Place a bed and workstation block
3. Wait for the villager to link up to the workstation
4. Break the workstation block
5. Turn the villager into a zombie villager
6. Place a minecart or boat nearby and try to get the zombie villager to enter it
7. Repeat steps (5) - (6)

Observed Results:

The zombie villager cannot enter the minecart or boat.

Expected Results:

The zombie villager should be able to enter the minecart and boat.

When converting zombified villagers to villagers, mechanics work during the first heal. But when villagers are being zombified for the second (and subsequent) times (in the same location as the first heal in relation to all blocks), the newly changed zombified villagers pop out of the minecart and do not get back in the minecart until they become villagers again