[0.14.17] Some items not split in total raw preview

[Killerbee]

I just noticed that some items aren't split in the "Total raw" list.
These include:
[*] Engine
[*] Processing Unit
[*] Explosives

And some recipes don't show their "Total raw" list.
These include:
[*] Car
[*] Power armor
[*] Exoskeleton

I haven't been able to spot a pattern as to why this preview is inconsistent.
So also have no idea if this is intended(but vague) behavior or a bug.

And I say vague because Power armor doesn't have "Total raw" list but Power armor MK2 does.

[Loewchen]

Items are broken down until no longer handcraftable. If no ingredients are handcraftable, the list is not shown at all as it would be identical with the recipe.

[Killerbee]

In my opinion that is a weird definition of the word "raw resources".
Raw resources should return a list of the base resource independent of the fact if it can be crafted by hand.
Now it just it is a worthless list of resources because it doesn't give an indication of what the real raw cost is because it still shows high level items.

Resources I would include in raw resources are:
[*] Iron plates
[*] Copper plates
[*] Plastic
[*] Coal
[*] Steel
[*] Others I'm possibly forgetting

Is there a specific reason why raw resources are defined as "craftable by hand"?

The main reason I want another definition is because of items like the speed modules, they are very expensive, but because the processing unit isn't split the real cost is hidden.

As an example I will give the Productivity module 3.
Resource - Raw cost according to the game - Real raw cost
Iron Plate - 360 - 1080
Copper Plate - 800 - 2000
Alien Artifact - 1 - 1
Plastic - 260 - 380
Sulfuric Acid - 0 - 15
Procesing Unit - 30 - 0

Those differences are in my opinion too high to justify with "craftable by hand"

[Nemoricus]

Resources I would include in raw resources are:
[*] Iron plates
[*] Copper plates
[*] Plastic
[*] Coal
[*] Steel
[*] Others I'm possibly forgetting"

Strictly speaking, wouldn't raw resources be iron ore, copper ore, stone, water, crude oil, and raw wood? These resources can be produced by no means other than extraction from ore deposits and the like, after all.

[Killerbee]

Resources I would include in raw resources are:
[*] Iron plates
[*] Copper plates
[*] Plastic
[*] Coal
[*] Steel
[*] Others I'm possibly forgetting"

Strictly speaking, wouldn't raw resources be iron ore, copper ore, stone, water, crude oil, and raw wood? These resources can be produced by no means other than extraction from ore deposits and the like, after all.

Yes that is certainly true.
But I would prefer intuitive raw resources, so i would consider resources that have been processed by a furnace also as raw resources.
Too bad this report has immediately been marked as "Not a bug" despite the fact that the current behavior certainly isn't ideal.