I was playing on a new survival world which I created in 1.7.2 and after chopping wood and digging a hole out in a hill, I placed a door down and the handle/texture seemed to be mirrored. This stayed that way even after a Minecraft restart. I have posted a YouTube video of it here: http://www.youtube.com/watch?v=EHEpDOcbhsg

I also had no mods on or resource packs, just plain vanilla Minecraft