They did nerf blocking tho in the early stages of the game. Only more recently that mistake was rectified.
There are some weird clipping spin animation-breaks that happen in melee, which some players know how to make happen more regularly than others, but they aren't sufficient for any good players to rely on against another good player as a means of winning. Whatever you think of how the devs treat combat now, which in fairness is with more respect to what good players have to say, it is a fact that the initial iterations were based on masses of casual feedback which severely weakened the combat system. Even now, it is plagued by many changes from Warband that were made in the name of casual appeal - swing arcs being a prime example.