mangoszero 1.12.1 npc/palyer spell problem

mangoszero 1.12.1 npc/palyer spell problem

Hey, having problem with my compiled mangos zero 1.12.1 server. when a player or a npc is casting a spell it works perfecly. but when it´s get interuped/npc or player dies the animation of the spell is still casting. When in a fight with bosses it is hard to know when to inerrupt or when he cast a new spell.

Somone have a clue or how to fix it?