I made a previous thread about this, but didn't get any sort of response. Have you heard of this happening? Has it happened to you?
When reanimating corpses, they often tend to return to the point of initial reanimation when a fight starts. This makes my zombie completely useless when outside of that area.
Another thing I've encountered, which has only been partially addressed, is my zombies not moving to the next area. They'll follow me, and then turn to ash after entering the area, creating an unlootable ash pile.
I've found that if I wait a minute, I can loot the ash but that's besides the point.
I even restarted, thinking it may have been my save game, but that didn't work.