In previous versions of Minecraft (1.7.4) In the debug screen, direction or "f:" was in both formats. Direction Name and Number. As someone that uses command blocks to summon item frames, direction is very useful for me.
You can see in the pictures one has the direction number and name. The other has Just the name.
I know this is not a bug but it would be better if this can be returned.
This is not a technical bug so is invalid for this site. I would recommend posting this to the Minecraft suggestions reddit at http://www.reddit.com/r/MinecraftSuggestions