Minecraft Username: Sheathok

Brief Description: When I try to combine certain items on my anvil, the items will combine, yet a few seconds later, they will revert to the original 2 items, while taking my exp.

Instructions: It seems to happen with my enchanted books, so put an item in with an enchanted book and try to combine it.

How many times did you recreate this bug?: At least 8 times.

Result: I lost my exp, yet still had my two separate items.

Expected Result: Well, I thought they might combine and become a new item.

Evidence: I can show you if you want.