Hi,
Some Rabbasca items are not in my crafting menu (on the character)
The concrete is missing:
https://i.imgur.com/QUMXJpu.png
The E.A.R.S. item tab is completely gone:
https://i.imgur.com/3ChNu4s.png

The intermediate products are however there.
Setting ghost cursor in remote view is completely fine :
https://i.imgur.com/UtO3ilQ.png
Settings has the Rabbasca item category still on:
https://i.imgur.com/csqMyrs.png
Tested with these mods only:
https://i.imgur.com/b2TWssW.png

Yes, this is intentional. These things can not be crafted by hand so I don't see a point having them in there. especially the separate tab which would be completely uncraftable, so the tab icon would just clutter the menu.

It's so annoying when trying to build when I happen to be there with my character :<

Why would that be annoying? You can not craft them from the menu anyways, to place them they need to be in inventory.

The point is to be able to pick a ghost cursor so that bots can build it or it could be added to a logistic group.

I am a bit confused, you can not place any ghosts or buildings from the player crafting menu. Just re-checked and you cannot even pipette into cursor from there. The buildings have always been available in logistics group and in the ghost build menu, so this should really just affect the buildings not being available for crafting (which again they can't be hand-crafted anyway).
The only situation I can see where it makes a difference would be non-editor god-mode, and I don't want to clutter the "normal playthrough" experience just for this when you can just use editor in those situations instead.
Maybe I am missing something or there is some UX setting that changes this behaviour? Let me know in that case and I will check it out.