Shipped Oct 2026
While physics is running, moving a fixed body, such as a floor, a ramp or a wall, in the Inspector or from your code now moves it in the simulation too, and objects resting on it wake up and react.
A triangle-mesh collider on a moving (dynamic) body now builds with a warning that says why it falls through terrain and what to use instead: a convex hull of the same mesh, or simple box, sphere, cylinder and capsule colliders.
Friction or bounciness that is not a valid number, and a vehicle wheel with no connection point, are refused by name instead of breaking the simulation, and the other wheels still build. Copies of an object keep every collider's density and debug wireframe setting, and a convex hull collider is copied too.