Hello, Mojang. I have a really odd issue with villagers. They seem to forget, that I've traded with them after a short amount of time and they lose all discounts. After trading with them, some even increase their price. It's really weird and annoying, to be honest. It will be good if you can make something about this bug (If it is a bug). Thank you.
Duplicates MC-154929 (works as intended).