I actually noticed the opposite, that the AI seemed greatly improved. I used them lots in ShB because I wanted to avoid grouping up as much as possible (yeah I know it's an mmo and all yadda yadda), and I absolutely hated them. They didn't heal while doing mechanics, making you die lots and if you died it was a wipe. When you'd get a stack marker, they'd stack in a predefined point. And in general they did fail stuff and die a lot, too.
Now I only used them to practice the second trial more while alone, since when I did it in PF it was very messy and wipey, and they did it oh my, so smoothly, including running to me when I had the stack marker, healing while doing mechanics etc. It actually made me wanna start using them again, which I never thoguht I'd do again.