Unet editor not syncing in 5.3.1

I've followed the example in

only project is in 2d and the players have 2drigidbodies. Every time a player spawns he spawns at 0,0 but the other player is also sucked to that location. This should not happen. Also when the players move it syncs only in the built player but not in the editor which there I see the second player but not his true position. Is it a bug? Am I doing something wrong?

 

I am getting the exact same issue. The rigidbody2D is not synced across the server even when it is set to sync :/