Grenades throw behind and gun shoots on its own or doesnt shoot

Sometimes when throwing grenades you throw them at the ground behind you instead of throwing it forward and sometimes the gun fires on its own without touching the fire button or just doesnt fire at all

Seconded. Happens to me on PC from time to time with the grenades. One of my FT mates sometimes reports the glitch of me firing my gun constantly on their screen, though I am not shooting on mine.

The gun thing is different were my buddy shoots his gun lets go of the mouse button and the gun keeps actually shooting bullets