(formerly known as Universe Sandbox 2) was a pivotal "eclipsed improvements" patch that acted as a bridge between the massive "Terraforming" update and the visual overhauls that followed. While smaller than a major numbered update, it brought significant, highly requested "quality-of-life" changes to the physics simulation and user experience.
As of my latest knowledge, here’s what’s useful to know about that version: universe sandbox 2 v3411
No software is perfect. While stable, v3411 has quirks that were only fixed in later builds: (formerly known as Universe Sandbox 2) was a