Game Mechanics: Death from NPC not granting Full Mana.

[Tycko]

Died several times in Lower Guk to NPC's.
Sometimes on death I would respawn with full mana.
Sometimes on death I would respawn with 20% mana.
I believe the system to determine if your death is PvP related may be screwed up.
Also I no longer notice PvP death buff on my char when being killed by players. Was bind camped in OOT yesterday and I was not seeing the buff on me like I used to be able to see.