If a Zombie Villager has a name from a Villager its been converted from - not from a Nametag used on the Zombie Villager - then it can despawn.
Linked issues
Comments
violine1101
MC-160551
Named Villagers converted to Zombie Villagers can despawn
Resolved
Duplicate
1
violine1101
Xyphon
(Unassigned)
Unconfirmed
(Unassigned)
1.14.4
Retrieved
Thank you for your report!
We're actually already tracking this issue in MC-88967, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.
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