I made a post before in regards to certain aggressive things no longer attacking me since the new patch. I have, however, discovered a pattern to particular things that may be of interest should you pursue fixing certain behaviours in the game. If you have ever used raised zombie on an emeny before and seen it reduced to an ash pile, you will discover that these piles remain; even when there comes a time when that enemy will respawn in their original spot where you first encountered them. Now, having discovered certain bandits respawned (like the tower up from Riverwood near Bleak Falls), I approached to discover they won't attack me. They only speak, but will not become aggressive unless I attack them. The Empty Ash Piles near them can no longer be searched and if I kill the bandits, I have noticed that I cannot use Raise Zombie/Corpse on them. They just bounce, but no message pops up in regards to the effect. It's as if they're already considered to be the original ash pile.

This is not a game breaking bug, but it is one that should be addressed, because every beast/man slayed so far that was revived is no longer attacking me when they respawn later.

Sadly, I have seen beasts that were never raised do this. I had frostbite spiders just looking at me in one temple. But this particular area I describe follows a consitent pattern.

This exact same bug was in Fallout 3. The ash pile stayed behind, even when that person respawned (in this case, an Enclave soldier I fried). If I clicked on the ash pile to try and loot it, the Enclave soldier, who was so far away from me, would talk... "Yes?" As if I were trying to speak to him.

This only proves Skyrim was made with the same engine. It has the exact same bugs. People falling from the sky (I've seen it in Fallout 3, exactly the same, especially in Megaton). The ashes are pretty much the exact same goo pile from FO3. And, just like in FO3, sometimes when I kill things and come back later, their gear will be floating in the air about 4 feet off the ground.

They really must address this, because it renders the respawn pointless in the case of people who may have raised them to rekill them for skill levelling - which is why I raised them.