One of the perks of the Ashen Wake exotic is that, if one directly hits and enemy with fusion grenades, the grenade energy should supposedly recharge. However, that's not happening. Not fully, not partially, I didn't even notice a speed increase to the grenade recharge. Is the exotic bugged, or am I missing something? And I did equip a fusion grenade and was direct hitting targets. The grenade was exploding on impact, which was part of the exotic's effects.