Rocket launcher exploding when near walls even if you aren't aiming directly in its line of fire

There seems to be a bug with the shotgun's idle animations where the Merc continuously pumps the shotgun, needlessly ejecting the shells.

Its just the animation, its not actually affecting ammo.

Also, the DooM looking animation just looks weird when you are firing rapidly. The shotgun goes facing to the side and up, but you can still shoot. It just looks very strange visually.