Allay can copy item

[QianMoo0121]

Information

• Server version: Leaf 1.21-DEV-ver/1.21@f9a45db 1.21-27-76c2f16

• Full output of /mv version -p: https://paste.gg/p/anonymous/33ee0e7f04504e348f1400b5fa637fc1

• Server log: https://gist.github.com/QianMoo0121/d4f50353829386a21d725fa76b633a97

Steps to reproduce
When I set up a Neither portal in the "cz" world, and put items on allay, let allay pass through the portal, and transmit it back to the world(it's a Survives world) through the portal of the portal. So as to achieve the purpose of copying items

Expected behavior
Make allay cannot enter the portal

Screenshots
no

[relxsmoke]

oh， Yes, I have also encountered this issue.
When a "world_the-end" portal is created, equip the "Armor Frame" and knock down the blocks below it, the "Armor Frame" will be transported to "world_the-end" and the equipment will still be present. World_the-end "is a survival world