I don’t know how to reproduce it because it seems so random, but I go to shoot someone and the recoil instantly jumps about 5-8cm on my screen (instantly) and then the gun keeps firing and empties the whole magazine.
The bug “seems” to be happening less in the beta, but I put 30 hours into alpha and only 5hours into beta so far.

When I can give more information I’ll come back an update this post.