How "bullet engine"-like or unlike is 3.1 Softbody?

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:bust_in_silhouette: Asked By grumblygibson

I ask because I noticed I can’t get many of the same softbody demo scenarios to work, as in this bullet physics engine video: https://www.youtube.com/watch?v=9sh-D0nejUY
So I wonder what’s a bug / WIP and what’s intended behavior.