Subgrid collisions and physics breakdown when interacting with vegetation

Body: When attaching any blocks to the end of pistons, hinges, or rotors, a severe physics issue occurs whenever a subgrid collides with trees. Instead of a normal impact, the subgrid either gets violently repelled with an incredible amount of force or instantly explodes. While this does not happen with standard voxel terrain like the ground, the interaction with vegetation (trees) and subgrids results in catastrophic error behavior.

Even in situations where a main grid would only sustain minor damage from a slight touch, introducing subgrids connected via pistons, rotors, or hinges causes the physics engine calculations to break down. It generates an overwhelming, nearly infinite repulsive force that instantly turns the entire machine into scrap metal.

This phenomenon severely damages the gameplay experience, exploration, and operational motivation. It becomes a critical source of frustration, particularly when operating rovers or multi-jointed arms around forest biomes. We strongly request a prompt investigation and fix regarding this physics synchronization or collision calculation processing.