My current companion is Grissenda. I have her trained in the finer arts of whirlwind and bash. The AI glitch happens most often when she is directly behind me and she bashes a mob. The mob shoots back and is stunned, instead of running around me and makeing a b-line to the mob, she tries to run through me and cant, and she is stuck running in place behind me. This happens when we're engaged with a single and multiple mobs. Also, she doesnt seem to know if we're engaged with multiple mobs and she bashes, to attacked the nearest mob.