KC Line of Sight

[Skrappy]

The mobs in KC can and will cast and land spells on you, even if you're completely around 2 or more corners.

[Arrisard]

They will begin casting spells on you without LoS or they will land spells on you without LoS? The former would be a bug, the latter is not. Posted this in a similar thread:

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.

If you have a live account active, you can log in right now and check this because this is the way it always has been and still is.

EDIT: I've pulled for groups in KC on P99 for several dozen hours over the last few weeks, and I've never seen them not obey the proper NPC spell casting rules (LoS needed to start casting, not needed to land).