Jump Bug with staff and rifle
I have got exactly the same problem. As far as I know it happens with every weapon.
With some weapons, the animation “stutters” are less noticeable than with others.
Sometimes the problem exists even with weapons stowed. So I guess the weapons are not the problem here
I have the exact same problem since Tuesday. I reset the camera and changed the graphic settings but nothing helped. That glitch only occurs if I am wielding a rifle. With the rifle stowed away the animation looks fine.
I have not tested it with a staff so I cannot confirm that.