Information

Full output of /ess version:

Server version: 1.16.1-R0.1-SNAPSHOT git-Spigot-9639cf7-4b9bc9d (MC: 1.16.1)
EssentialsX version: 2.18.1.0
Vault is not installed. Chat and permissions may not work.
You are running an unsupported server version!

Server log: no logs generated related to the issue neither on the server nor client latest.log.

EssentialsX config: entirely default config.

Details

Description
This is a crossover from the JEI issues git page, here, and may also be linked with the isse #3642.
We believe EssentialsX is interfering with the JEI /give command when in survival. It results in it not being able to spawn any item.
More info can be found on the JEI issue page.

Steps to reproduce

1. Install JEI and join a server running EssentialX.
2. Enable cheat mode in JEI and while in survival, attempt to get an item.
3. No item is given to the player.

Expected behavior
/give command does not interfere with the JEI mod.

Screenshots
Not needed, i think.

JEI uses this code to figure out if the player can use /give:
https://github.com/mezz/JustEnoughItems/blob/4f83a971e91beb97547bb3fab58a7fa2a7d42f6e/src/main/java/mezz/jei/util/CommandUtilServer.java#L72-L88

I am guessing EssentialsX may be accidentally changing the CommandNode.canUse check so that it fails.

I've also updated essentials to the latest version (EssentialsX-2.18.1.12) and the issue is still present.

I don't think that it's Essentials' issue, and I believe that JEI should do something about that on their end

Talked about this with mezz on Paper discord, from what I understand not an Essentials issue and more a Forge/Bukkit interop issue I've talked with mezz on how to resolve this on their end