I have cured which normally would trade me 1 emerald and a book for a enchanted book.
Im not quite sure what caused my villagers to go back to normal but it might be because Hero of the Village messes it up and puts the villager trades back to normal and discounts them that way. Because cured villagers cant really have a better discount because they are already discounted.
Linked issues
Comments 2
Thank you for your report!
We're tracking this issue in MCPE-104792, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. The previous discount to 1 emerald was actually a bug. Please do not leave a comment on the linked ticket.
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It's because in 1.16.100 they made it so curing villagers does next to nothing