If you use any external nbt editor to get 64 of any tool or shulker you can't move the item and any item placed on the shulker will be duplicated
also sorry for not having a video it takes a while to set up
BDS-17822
Unable to move 64 over stacked items after using a inventory editor
Resolved
Invalid
0
Thank you for your report!
However, this issue is Invalid.
Issues caused by third-party editors are not accepted on the bug tracker. If you can reproduce the issue in a vanilla environment, please recreate the issue.
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