Trade signs dupe items

[Myszku]

Type of bug

Exploit

/ess dump all output

https://essentialsx.net/dump.html?bytebin=tcYH4jl3N0

Error log (if applicable)

No response

Bug description

There is a bug in the [trade] signs that duplicates items from the sign when it is destroyed while having a full inventory.

Steps to reproduce

1. Create a [trade] sign and put 64 diamond blocks into it.
2. Fill your inventory with any items.
3. Destroy the [trade] sign.
4. Instead of 64 diamond blocks, 128 blocks will drop.

Video: https://imgur.com/a/LOx3AGM

Expected behaviour

fix it

Actual behaviour

everything explode!

Additional Information

https://imgur.com/a/LOx3AGM