Client stuck after loading level for first time

Hello, i’m creating a multiplayer game with a lobby system. A bug occurs when a client load a map for the first time. He doesn’t receive server informations (variables are not replicated). If client reload the map a second time through servertravel, it works. Does seamless travel activated cause the problem?

Here is the link of the servertravel blueprint : http://prntscr.com/bn8jtv