Thanks for another good video. We know what is going wrong in these cases: physics not catching up because of an object in the way, thus desyncing hitbox with soldier. This only happens on revives/takedowns where one of the soldiers is standing/lying on an object above the other soldier, it should be much less common than regular 'horizontal' revives but is confusing to the players nonetheless.
We're currently discussing the best way to fix it, now that we have a full understanding of the issue it shouldn't take long.