Minecraft Username: knears2000 Brief Description: Trade Signs will not create when trying to input Oak Leaves. Instructions: Place a sign Have the first line say "[Trade]" Have the second line say "$2.40" Have the third line say "16 OLeaves:64" Hit "Done" How many times did you recreate this bug?: At least 5 times. Result: Trade sign won't create. A message pops up saying "Error: You don't have x64 leaves!" Expected Result: The trade sign would create. Evidence: I've also tried with the alias of "OLeaf" and "Leaves". Both did not work.
Older leaves, which were generated pre 1.5.2, I believe, all had the name "Oak Leaves," even though they may actually be jungle leaves or birch leaves, or what have you. The best way to figure out what to put on the sign is to check the meta data by doing /itemdb, like Emau said. It might say that you actually have a different type of leaf than you think
Actual oak leaves have a meta data of zero, and that can be seen by typing "/itemdb 18:0". To put those leaves in a sign, you are going to have to use the item name of "18.4" for the "oak leaves" that you have, since they share names.