Note
Only comment if you have information not mentioned already related to reproducing this issue. Other comments will be removed.
The best way you can indicate that an issue is important to you is to vote for it. For more information please see the Bug Tracker Guidelines.
To discuss this or any other bug, or to request adding affected versions, please use the Mojira Discord.
How to reproduce
Update to Preview 1.21.50.25
Create new world in creative
Make sure Education Edition toggle is off
Create world and join
Open Inventory
Click on third category button (the one with the icon of a bed)
Scroll all the way down until you find it.
Linked issues
is duplicated by 9
Attachments
Comments 8

Can confirm for win 10, these steps are not necessary it appears in the creative inventory no matter what.
What's also weird is that the Chalkboard and Poster aren't present in the inventory. Side note, I've never seen this "?" texture before, it's normally always the "Purple & Black Checkers" or "upd-ate"/"ate-upd".
@TheAxolotlLord just so you know the update block texture got updatet into this. So its just the normal texture for when a bllock dosen't have a texture
keep this item "Slate" when toggle Education enabled
Has anyone filed an official FR at Discord or the Feedback website for this?
Relates to MCPE-188223