Items on 1.21 not stacking with other items

[Mcklp]

Items on 1.21 have different nbt data making them impossible to stack with other items

• Deadchest
• 4.21.0
• 1.21
• This server is running Paper version 1.21-15-master

Describe the bug
Items from deadchest have one additional component listed after hovering on them, making it impossible to stack with items that are not from deadchest. Using command "/data get entity @s SelectedItem" they have "minecrfat:damage": 0 (i added a photo).
Despite that deadchest work for me on 1.21

To Reproduce
Steps to reproduce the behavior:

1. Get 2 same stackable items
2. Get killed with one of it
3. Pickup dead chest
4. Try to stack them

Expected behavior
Items from dead chest to be the same as the rest of the items.

Screenshots

[leshicodes]

Not the Author, but If I am not mistaken I believe the highest supported version for this plugin is 1.20.6 right?

[Mcklp]

Yeah, thats right @leshicodes, but i wanted to write my observations to maybe help with updating it to 1.21. I know that this version isnt supported and thats why something like that happened. (I accidentally closed this thread sorry i reopened it)

[leshicodes]

@Mcklp very fair, and I had a feeling that's what your intentions were. I am a novice programmer so I might see if I can create a PR to support 1.21 unless the author disapproves.

[apavarino]

Hello, thanks for the report, it's a good help for me to provide a stable 1.21 version. I'm currently working on it. Stay tunned !

[apavarino]

Seems to be a paper issue. I made few tests, deadchest handle well item meta and NBT tags. But something is different from deachest block and game block. I compare values of ItemStack, this is strictly the same. i think it's something internal to the API. I will do more test when 1.21 Paper version will be more stable.