Map rounds

I have been having this problem on my map that I can’t seem to figure out how to fix. I am making a 20 round map and for some reason someone always gets the return to lobby screen overlay after round one but can still move around on round 2 with the overlay. Then after round 2 everything works like it should for the remainder of the rounds. Does anyone know how to fix this issue? I have tried to trouble shoot this over and over again. It only happens to one person for the match and that is it. I do have a round manager device in my map with a round setting device.