Silencing don't work?

Hi,
In the room where a girl is hold hostage by Yanos I used a Silence cleric spell level 2 but then, the enemies could move and be free to cast their spells. The game tool tip wrote "silenced" on all enemy npcs.
Is silence a area spell which dispell when you leave the area?? In no other game does it work like that so I find that really strange.
Edit apparently it works like a area spell... that's really not what the spell describe.
(Sorry for no further report, I'm going back to pathfinder kingmaker until next version which remove the CTD's.)
In the room where a girl is hold hostage by Yanos I used a Silence cleric spell level 2 but then, the enemies could move and be free to cast their spells. The game tool tip wrote "silenced" on all enemy npcs.
Is silence a area spell which dispell when you leave the area?? In no other game does it work like that so I find that really strange.
Edit apparently it works like a area spell... that's really not what the spell describe.
(Sorry for no further report, I'm going back to pathfinder kingmaker until next version which remove the CTD's.)