[0.17] excess copper / wrong materials consumed by loaders during repair missions

[rbtcollins]

e.g. feeding iron into the lab repair loader silently eats the iron, rather than it backing up like it would in the main game.
similarly copper production is easily higher than gears, and copper above the 50 target is still consumed

[wheybags]

Not a bug, we want to avoid new players backing things up when they dont understand how to pick up items yet.
Also, it silently puts it back in your inventory when you finish the quest :v
Thanks for the report though!