I have found that I will swing wide of a target and be sure that I have missed and still hit them at least a body width to the side.
I also have the weird animations where I will swing right and it will switch to an over head half way through.
I tend to run through shielders (not good for me
) at times.
None of this happened before the last patch (for me at least), and it sure isn't my comp xD.