Before this patch I had no problems using the lock all option including the entire time I used the ik beta, and then as soon as this patch comes out when I look down even slightly my spine drastically rotates backwards even in avatars I've made that are perfectly proportional to me irl. This issue is with both height scaling and arm span scaling either using my exact height or whatever makes it fit. No one seems to point out that they have this exact issue. I have a couple example pictures here, first one looking straight ahead, second rotating my head down slightly.