This bug has been here since the start of the episode and i thought this got fix because i saw forums talking about it and devs but i guess not. So the bug is when you use the exotic perk to consume your grenade it will sometimes lock up. When the gun locks up it stays at 0 ammo so you cant shoot it or reload it for some reason, so therefore making it unusable. Really hope this gets fixed soon because the gun is unusable right now.