bug when creating prefabs in multiplayer

Hello,
I create a game in multiplayer but when another player joins the room, the player prefabs his beuger but only on the rating of the player who joins the parties. I reduced my prefabs to a simple cube and a basic move script and it works. So I don't see why my player's prebafs are beug.
This is the player who join de game. But he control only 1 player.

And it's the host at the same moment.

Thanks for you futur answer !