So, I've noticed from other people's screenshots that their games seem to have the option to be windowed or full screen. Mine does not? It's like this always, not quite full screen but not windowed either. Occasionally this cuts the tops of names and such off, as seen here, but not always.
Have you tried setting up fullscreen via the Esc>Settings> Video https://i.gyazo.com/90c2d4101567b248dfb3dec6a6d8764b.jpg Also choose borderless to get a proper fullscreen.