A while ago the weapon kit specific backpacks have been removed to allow players to (always) see their normal backpack. Dunno who has asked for that and clearly an option to decide whether you want that “feature” or not would have been more “urgent” than where you want to place a certain topic in some UI drop down …
Anyway, weapon kits can no longer be stowed and engineers have to use their elixir guns to mine ore … what an oversight.
Do we have to live with that forever or is a dev willing to help us out of the misery?