mangosR2/mangos — comment on commit f99a7b95458585f92c4c436a44d82ea4bc368c53
File:  line 0
By Reamer:

ahh i have find the place in void Player::Regenerate(Powers power, uint32 diff)
case POWER_MANA:
{
if (HasAuraType(SPELL_AURA_STOP_NATURAL_MANA_REGEN))
break;
...
I think this aura should not make problem.