Getting Disconnected Due to Items in Shulker

[fourninetynine51]

General Information

disconnect-2026-04-05_13.47.15-client.txt

Bug Description

I am on a server that is in version 26.1, while my game version is 1.21.11. Everything works as it should until I keep getting disconnected when my friend holds a shulker item, it is dropped, or if it is loaded in a container. When we looked into it a little more, we found that it only happens when there is a gap in the items (screenshot attached to demonstrate, as well as the image and .txt file of the report)

Steps to Reproduce

1. Get a shulker and fill it with at least 1 of any item of any amount, but leave any amount of gap between the item and the first slot.
2. Break the shulker, or have another player hold the shulker, or you open a chest with said shulker inside it.
3. Game disconnects.

Expected Behavior

The game should not crash when there is a gap in items while in a shulker.

[Barvalg]