[MC-252968] /item replace. Knowledge Book.

The item is not visible in the inventory, but it is there
Command:

item replace entity @p weapon.mainhand with minecraft:knowledge_book
Vanilla 100%

[media]

Attachments

Same can go for structure void, barriers, so on. It's most definitely intentional.

Regression of MC-29318 it seems.

I was unable to reproduce this in 22w24a

Resolving as a duplicate of MC-239935