Found a dupe bug. Place a stack of an item with resolute ivy. The whole stack can be ivy'd with one resolute ivy and the stack you used to craft it will be reduced by one. (As in, 1 ivy and 64 cobblestone will get you 64 of resolute ivy'd cobblestone and 63 will still be in the crafting table.) Also, you can apply two ivy at once or apply it to an item that already has resolute ivy? Not sure if intentional.