Healed villagers that had locked trades will not open GUI.

I expected to heal a locked a villager and be able to trade with them once again.

 

As a result of the villager not accessing their desired work station their GUI closed instantly.

 

Steps to reproduce:

1. Trade with a villager to lock their trades.
2. Convert them into a zombie villager by placing a zombie beside them.
3. Destroy the villagers workstation.
4. Heal the villager.
5. Attempt to trade with the villager, however GUI will not open.