Minor issues with blade Weapon Range

1. Title: Blade weapon range has minor issues
   
2. Reproduction Rate:100%
3. Blocker?No
4. Details: 1) Uneven grounds and difference in height cause blade person to attack nothing. A good example is a grannus mob (one on the castle wall near the gate). In order to hit it you need to come very close. 2)attacking from behind even the target is very close hits nothing. I need to go so close to the target to hit which blows my cover most of the time.
   
5. Steps to Reproduce: try the mob in grannus attack it a bit far but in normal blade range.
   
6. User Specs:w10 i7 32ram 980ti