ok, i started using the coal bag today, but i noticed a bug i think.. i put one coal in the bag while in the bank, and then i filled the bag with another 26 coal, then withdrew 8 coal and the rest iron ore and after i finished superheating 17 steel bars, the one extra coal i put in the bag was gone!!! it said coal bag was empty even though 17 steel bars only use 34 coal also, when i put the one piece of coal in the bag and then filled it with 26 coal, and i clicked inspect, the bag said there was only 26 coal! why?