Stealth don't work for me, i get discovered but the combat AI is disabled and the guards circle me with weapons drawn. And sometimes it disables the patrol script making the guards stand in one place. All the other options works just as before.
They changed the entire game engine with this patch. We had to make the trainer from scratch and it took over 12 hours, the whole work day for us. Stealth we were not able to perfect as it's the most difficult option to make. We will try and look at it further possibly on Monday.