I have my craftbook open and I shift-click on the recipe. It properly puts the stacks on the crafting table. When I right-click to fetch one-at-a-time, the crafting table correctly gives me the one item, but then it puts "ghost duplicate stacks" on the craft table going up to the tens of thousands. When I stop crafting my "one-sies" and either close the craft table or try to pick up the stacks, the "ghost glitches" collapse. I can never actually pull "dupes" out of this, but it looks like the client is screwing up the "stack left over" tally and server corrects the amount to avoid actual duping.