Zombie Followers Buggy

Right now I'm trying to make a Minion Witch. My current primary summon are Zombies. I've noticed that the Zombie AI can be really buggy at times. For instance, some times my Zombies will just disappear when I am running around the map. If I retrace my steps, they sometimes suddenly reappear, sometimes they are gone for good. I also notice that they wander off from time to time even when I'm just standing still with no monsters around me. Because Zombies require dead bodies to create, this can get quite annoying. I'm wondering if this is a known issue? If not, I'm glad I could bring it to GGG's attention. I've noticed that there have been a few other people with the same problems, so I thought a thread should be made for this.

I think I've seen it mentioned before, but it does bear repeating. I really like the summoning mechanics of this game, but it does seem like I end up summoning lots of new zombies even when there's some perfectly good zombies elsewhere in the dungeon just... lost. It's not a huge deal, and I guess zombies are supposed to be dumb, but still, it would be nice if they could tinker the AI a bit so that they'd be a bit better at following.

I noticed this a lot in the tight cave areas where the zombie couldn't keep up and ended up going down the wrong paths and just disappearing.