Receiving failed. SocketException: TimedOut

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I connect to master using PhotonNetwork.ConnectUsingSettings(), then the OnConnectedToMaster() method is triggered. After i turn off Internet this error appers:
Receiving failed. SocketException: TimedOut
UnityEngine.Debug:LogError(Object)
Photon.Realtime.LoadBalancingClient:DebugReturn(DebugLevel, String) (at Assets/Photon/PhotonRealtime/Code/LoadBalancingClient.cs:2042)
ExitGames.Client.Photon.<>c__DisplayClass103_0:b__0()
ExitGames.Client.Photon.TPeer:DispatchIncomingCommands()
ExitGames.Client.Photon.PhotonPeer:DispatchIncomingCommands()
Photon.Pun.PhotonHandler:FixedUpdate() (at Assets/Photon/PhotonUnityNetworking/Code/PhotonHandler.cs:116)


Then the OnDisconnected() method is triggered with DisconnectCause Exception and then it's triggered again with DisconnectCause ClientTimeout, and at this point, my script stops running.

I'm using TPC connection and the free version of Pun: 2.13, Photon lib: 4.1.2.16.
It olny happens with TPC, with UDP i just got the DisconnectCause ClientTimeout when the OnDisconnected() is triggered.