I would say that it is around 15% less noticeable in the latest build, but still ever present. In my game, we make use of time dilation and it is much more noticeable there as well.
Something to note - I did some actor recording in sequencer last week. I noticed that upon right when the ragdoll occurs, the recorded animation of the capsule seems to freak out for a frame or two. It rotates the character in some crazy ways real quick and snaps it back to where it should be. (This visually appears to be a flip-flop, like the second fix you described…) The skeleton does not reset it’s pose though, it transitions to the ragdoll okay from what I saw, but follows the capsule as it jitters. Leads me to think that perhaps this could solely have to do with the capsule now?? Last night I tried detaching the mesh from the capsule before rag dolling, but that didn’t help.
My game is very near completion and this bug, while not bad enough to stop us from releasing, is a bit discouraging since we make use of lots of ragdoll and time dilation! Also I have to say, I did not notice it in 4.8 or before. Upon upgrading from 4.8 to 4.12, it became apparent. So if something was changed in relation to the capsule or ragdoll sometime between those releases, that could also help us to narrow down the issue even more.