Basicly
I found out you can lit a miner's helm if you use a torch even if you never (ever) put a candle in it. (ou vilage does not have wax yet)
I do not think this is intended and I could not find a report for such tool (perhaps because this helmet is not used much)
for finding a bug of such importance I expect nothing less then an infinite stream of capes with a big K on it. =)