We can't seem to sell "Sharpness I" enchanted swords from chests. The item code shows as "276-51" but, with new items of that type in the chest, it still says 'out of stock'. It's not "just me" - creeper3846 has the same problem. And yes, the code is the number "51" and not the letter "S1". We tried letter-S instead, but same thing. Is there some specific bug, with trying to sell that sword?