That's the way NC made the game. If you have an active account on retail you can try it there and you'll see it's the same. (P.S. don't compare with l2j servers, there the shots are loaded right before doing the skill, not after it. It's a different mechanic that is not retail like)
H5 Part 3 update is scheduled for June.
20+ for an update on JUNE!!! OMG CANT WAIT!