PUN Basics Tutorial: can't find out why my players are instantiated several times

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Hello,

I tried to follow the tutorial: https://doc.photonengine.com/en-us/pun/v2/demos-and-tutorials/pun-basics-tutorial/intro

However, when I tried it with two players (using two windows) I get the following issue:


It seems from the console that the player's prefabs are instantiated each time a room is created.


Furthermore, when I debug, it seems that this lines are never called:

if (photonView.IsMine)
           {
                LocalPlayerInstance = gameObject;
            }
But I checked with the official demo, these lines are well placed, in the Awake() function of the PlayerManager.