npc caster behavior

[Zyvixious]

i know others have noticed this bug, all npcs are able to continue thier spells once caster even after leaving LOS which is untrue for players and was always true for npcs and has been an issue for a long time. not sure if others have made a post about this but its very annoying and kind of unfair

[Arrisard]

This is the way it has been, and still is, on live.

An NPC needs LoS to start casting, not to finish it. So if the NPC starts casting and you run around the corner, the spell will land. However, the NPC will then move to regain LoS before he begins casting another spell.