I don't know if this counts as a bug but giving item an attribute via nbt it deletes all base attributes and adds nbt attribute. It would be cool to keep its base attributes unless you override it.
Linked issues
duplicates 1
Comments 2
Thank you for your report!
We're actually already tracking this issue in MC-88085, so this ticket is being resolved and linked as a duplicate.
However, that ticket has been resolved as working as intended, which means that this will not be fixed as it is not considered a bug.
Please be sure to use the search feature before creating a ticket to see if the issue has already been reported.
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Change request, not a bug.