Special Ability : Spell Nerf?

Okay, I'm no sure why, but the bandits in the outpost seem to have a strange ability to make people stop casting. When both me and my summons would start casting a spell, the mob would turn and look at us, we would stop casting, then they would return to attacking wichever one of us they had previously been attacking.

They're all shadowdancers, so they're stealthing and unstealthing, or stealthing and you spot them.

Even the warriors and mages? Because it's happening with them too. I figored that was the reason with the sneaker classes up there, but it's everything so far. And only recently.

Yeah all of them are it's annoying but effective ^^

I think if you have the spell true seeing on they wont try and HIPS.