Villager's don't apply a discount after curing (no matter how many cures).

This worked just a few days ago as I’ve been curing villagers recently, but today the villagers no longer apply trade discounts after being cured. I have cured the same villager twice, and neither time has it discounted anything. I did the cure properly, and troubleshooted the best I can, and can only think that this must be a bug.