[MC-7629] Hitboxes of blocks with orientation dependend placement are broken.

This Bug is hard to describe , so please check out this short video I made about it. http://www.youtube.com/watch?v=y1kon5Wax8I&feature=youtu.be

Linked issues

Confirmed.And I think is related to a bug when you create a new world you can't move because you are stuck on the ground

Going to put the video as explanation of the bug to the description of MC-1635 and MC-1669.