Causes inventory stacks to disappear

[RobinDaugherty]

1. Trade farmers carrots for emeralds.
2. Carrots are being added to the inventory by a nearby water stream, and added to the open inventory slot at the bottom right
3. In the first trade, receive a few emeralds, which are added to the top-left inventory slot
4. With each trade, there's a chance that a stack of emeralds disappears. Usually it's a full stack that disappears.

Without this mod, emeralds received in trade are placed in the first open inventory slot at the bottom right. Not sure if that's related this issue.

[gbl]

What kind of server is that? (Builtin Single-Player, Vanilla, Fabric, Forge, Spigot/Paper) ? If it's a Spigot/Paper version, is the server version different from 1.17.1, with a plugin like ViaVersion to translate between versions?

Are you using the newest (1.17.1) version of the mod, or a previous one?

The mod simulates filling the trade inventory, then shift-clicking the trade output item. This typically means the shift-click occurs before the server responds to the "fill the inventory" clicks, which might mean the client assigns a different slot than the server does later. But this shouldn't make content disappear completely.

[RobinDaugherty]

This was running in single-player on 1.17.1 with the easiervillagertrading-1.17.1-fabric0.36.1-1.5.4 build.

[tioalexis]

I am experiencing the same issue but with Sticks and Rotten Flesh instead of Carrots. Using version 1.18-fabric0.43.1-1.5.4 from modrinth on a Vanilla 1.18.1 multiplayer server.

[ChristopherHaws]

This is happening to me as well when I trade too quickly. The server is running Paper (latest 1.18.1). Specifically this happens when i spam click the item instead of shift click.

[leftbones]

I'm experiencing this when using shift+click (trade all) with sticks to a fletcher, Fabric 1.19.1

[Excederus]

A few things I want to add that I found out:

Emeralds (or traded items) seem to disappear when the trade is repeated too fast
For me this does not happen when using Shift+Click to trade all
This can be replicated easily by using an autoclicker

Also my suggestion (if this is an unfixable MC issue) would be to add a hidden timer that limits single trades to once every x ticks

Technical information in my case:
Pufferfish/Purpur 1.19.2 server
Fabric 1.19.2 Client
Latest Mod version