This is a list of bugs I noticed during my first playthrough yesterday. Will add as more occur.
Crashed three times yesterday just exiting doors.
Night Silence sneak ability seems slower and the animation is jerky, instead of "running" in sneak, now my character is bopping up and down between the sneak-running and sneaking in high speed (that's not as fast as it was before patch, or at least doesn't seem as fast).
Incredibly laggy. I went into the first delve near Vivec City and couldn't attack anything, but it could attack me. My weapons disappeared from my hands even though they were still equipped and I couldn't swing. Had to re-log to be able to fight again.
Being "hidden" isn't working right. I'm fully concealed, in another room, around a corner, did a murder and someone in the other room saw me and summoned three other guards from nowhere. This was in Castle Anvil, Gold Coast. The eye is fully closed after hearing the stealth whoosh and I'm still being seen doing theft. Very annoying, and worse than it was before the patch. Broken stealth happening in Vvardenfell too, just haven't been caught doing a murder out of line of sight (yet).
Sometimes I hit Steel Tornado and my toon doesn't spin but the knives flash out anyway.