The texture for stairs is backwards.
I think there is a bug where the stairs are pointing west. No matter where I place a stair, it points west.
How to activate:
1. Place a stair down
For some reason, if you placed a stair down in a older version then Opened it up in 14w25a, it wouldn't point west.
Environment
Put your operating system (Windows 7, Windows XP, OSX) and Java version if you know it here
It is also with repeaters!