Steam Multiplayer : Server Menu toggle visibility but buttons don't work when a client join session

Hello everyone,

I try a lot of things before asking here but I got a little problem. I “half” fix that but it’s not really what I want and I really need to understand why and not continue with a question in my head without answer ^^

I got a PlayerController. On event begin play, I create a widget then I put it as a variable (PlayerMenuREF).
So…
I create a steam session and my HUD work nice. I can toggle escape menu visibility with escape keymap or using Widget button and all work without problem.
When a Client join the session, this one can use Widget and escape menu without problem !
But… For the server/host, I can still toggle the escape menu, but buttons didn’t work. BUT ! I can toggle escape menu from the Widget button (this is the same widget, I just collapse a vertical box for the “escape Menu”).

I try some events : “run on server” “Run Owning Client” etc… no way -_-

I just understand that my host got something like two PlayerController. It’s strange, it’s like my PlayerMenuREF is another PlayerController. I can toggle visibility for the EscapeMenu Twice. One work (with widget button) but the escape keymap is visible but can’t click buttons -_-

Please help ^^