My magic casting automatons have been acting a bit iffy as of late.
Fire, Frost and Shock spiders' cloaks are function correctly but Fire, Frost and Wabbajack (no cloak) spiders no longer cast their spells.
I am befuddled as to what has messed up, it doesn't appear to be the cloak because the Wabba Spider doesn't have one and the shock spider is working perfectly fine but the shock spider is using a modified (and separate from the original) lightning storm. The poison spider also features a projectile like the fire and frost spiders but it is working perfectly fine.
The only differences between shock and fire spiders are the spells they are using.

Any ideas?