[MC-10659] I can not invoke the "Whiter"

I can not invoke the "Whiter".

I put the blocks in place ... but does not work:

http://www.minecraftwiki.net/wiki/File:Wither_recipe.png

Linked issues

duplicates 1

MC-3780 Wither not spawning Resolved

Comments 4

Tails 2013-03-01T19:11:59Z

Duplicate of MC-3780, please use the search function to see if your bug has already been submitted. Currently over 53% of tickets are being closed as duplicate.

Null 2013-03-01T21:15:41Z

it is not duplicated. The version is different and I put the blocks in the correct order.

Tails 2013-03-01T21:18:24Z

Please read the comments of MC-3780.

Null 2013-03-01T21:26:18Z

Sorry, I had it in a peaceful v.v. Thanks