When the character is locked-on to a creature, and you execute a series of close melee attacks, some of those moves carry you through the creature, and miss because now it’s behind the PC. As soon as the animation finishes, the PC instantly flips direction to face the target, which is jarring and awkward.
Adding some collision detection of player-character and monster-object, and stopping them from passing through each other would go a long way to make combat more enjoyable and natural-feeling.