1. Run attached physics_repro.Stratis mission with 2 players
2. Player 1 (server) should select "Spawn object" from action menu
3. Player 2 (client) should select "Spawn object" from action menu
4. Both players should observe that object that belongs to other player starts to fly all over the place while their own object remains nearly still.
If nothing happens spawn more objects or try again but it should work with just two objects. You may also try to have only one player spawning several objects and they will appear almost motionless for their them while other player will see objects flying all over the place like a hurricane.