Is this what happened to my trading hall? I wasted about 150-200 golden apples to get all their prices down to 1 emerald and now there is a 1 emerald discount, if I knew that Mojang was going to ruin my trading hall I wouldn't of wasted 200 golden apples on it. I don't think that reducing their trades are op as I was in the late game when I reduced them so I could have just as easily spent hours mining rather than hours grinding for gold, chopping down forests for apples, finding a spider spawner, grinding for blaze rods. Basically, my point is it takes time to get the stuff to discount them, and just because they are discounted doesn't mean that I still don't have to harvest carrots. Very sad that all the time I put into Minecraft was pretty much undone by one update. My personal opinion is that when you cure a villager it should only affect that villager and reduces the quantity by 5-10.
The realm hoster needs to update the realm the same thing was happening before the host updated