Do you mean your inventory disappears? Let me try to be clear:
- Craft and place a new character.
- Switch to that character.
- Craft some electronic circuits.
- Get killed somehow. You get put into your original character.
- The electronic circuits are missing from your inventory.
Where did they go? They are stored in the dead character body. Am I understanding correctly? If so, this is intentional behavior. Crafted thingies stay in the body that held them, even unto death.