Nobel Harvards, it IS a bug because you dont even get a copy if you do this, you only get the same map back and lose 8 paper.
I cant close this issue because i'm not a moderator but this is a duplicate of MC-13731. Please use the search function to see if your bug has already been submitted.
I can confirm this in 1.5.1
http://www.youtube.com/watch?v=Dp-Ecc86ICU
Video by IamSp00n
I reinstalled minecraft and now it's fixed. Must have been a glitch of some sort.
Anyway how do i delete this post?
Kumasasa i forgot to mention that it happend only if all the slots were filled with the named item
Cube, i was aware of it but he said this wasn't a bug.
I just told he was thinking of a differend crafting recipe by proving him wrong.