Fullscreen means the entire screen.
Windowed/Borderless Fullscreen means you can pin other windows above it.
If you're playing via Proton YMMV because of the various rendering tricks needed to make certain games work, but mostly it should be fine.
Fullscreen means the entire screen.
Windowed/Borderless Fullscreen means you can pin other windows above it.
If you're playing via Proton YMMV because of the various rendering tricks needed to make certain games work, but mostly it should be fine.