Own name hidden by Personal Resource Display
 

The player's own name (UnitNameOwn) if enabled, gets hidden in combat / by the Personal Resource Display (nameplate for self)

It would be nice if this didn't happen for your own name, aside from nameplate for other players/npcs

http://us.battle.net/forums/en/wow/topic/20745036181 Personal Resource Display hides my name.
http://eu.battle.net/forums/en/wow/topic/17613401892 Hidden name in combat

pretty sure this is intentional, as the raid icon is also removed when the display is shown — i can vaguely appreciate their intent to not repeat information.

options to choose are always nice though, even if through a console command