Invisibility in Spectator mode makes torso and limbs clear, but head only partly transparent.
-When in spectator mode (/gamemode 3,) you'll see (in F5 mode) that your head is not clear like the rest of your body.
Environment
Windows 8.1
Created Issue:
Invisibility in Spectator mode makes torso and limbs clear, but head only partly transparent.
-When in spectator mode (/gamemode 3,) you'll see (in F5 mode) that your head is not clear like the rest of your body.
Environment
Windows 8.1
Added Affects Versions: 1.8.1-pre3 1.8

I think this is only visible to you, did not test this though.
Can confirm, but the question is if it applies to all other players as well.
Still, it's a bug as you can't see the rest of the body hat.
I was not able to test SMP for this, but it would be interesting to see if this persists.
I do believe that this is intended. Plus, other players (except spectators) don't see you in multiplayer.
Definitely Intended