Script:
game.Players.LocalPlayer:GetMouse().KeyDown:connect(function(key)
if key == 47 then
script.Parent:CaptureFocus()
end
end)
Here is the problem The capturefocus works fine, the byte is correct. In studio, I click "/" and it works fine. In online, I click "/" and it won't work (I need to press Alt, Ctrl, or Shift with it for it to work) In a local script. No error.

3 comments
Make sure you don't have filtering enabled on.. it's located within Workspace itself :D
I'll see if that is problem, if not I'll report back.
No, it sadly is off.