Have noticed this as well with 1.2.8- bot won't cast mages to kill off the mobs in the way... it seems to happen fairly frequently (since the mages will blow up an elite real quick, leaving orbs and a buncha other mobs around them).
Routine works great! Been able to do a 91 so far with no gear augs (yet). Only complaint is that it isn't so good at dodging blood stars and stands in poison corpses.
One thing I'd like to be able to do but unsure how is manually control the movement, but still have the bot casting. Or to...