This was said to be a resolved bug , but the issue persists , Villagers will not restock their trades after their cured from being a zombie villager.

Villagers will not restock their trades after their cured from being a zombie villager. and before the zombie villager they were traded with.

before the curing the villagers I tested with, they restocked fine.

I first encountered it on a server I was playing with friends. But it had a few datapacks that I was thinking was causing the issue. but I was able to replicate it in a single player vanilla 1.19 world.