Tbh, I actually have no idea. I didn't even realize... Im so confused though... because that guy with the yellow skins nametag didn't appear...
It's a 1.8 bug for donator nametags. Same thing happens with invis pots (You still see their nametags)
Im using 1.8.1 optifine. To prove this and to prove the point of me NOT HACKING! Look on the right next to my shoulder, you can see the top of my optiffine Cape! Stop accusing me now please.
Oh and did you also realise that those names are donator names? Yea the people's nametags I see in f1 is donator names t. See the guy in the top left he isn't a donator and I can't see his name.