Hi folks,
I found these two bugs on nader’s grenade launcher: first one the direct hits with the grenades that are aimed at the head don’t register but do explode. No damage is output:
Second one, if you fire a direct grenade hit on a team mate, the grenade model won’t exist anymore because the shot hit and exploded, but the ballistic trail is still active:
EDIT : featuring Rex as test ragdoll 
