If your game loads up just fine, it is probably just a setting you have on the launcher by default. Go to the launcher settings at the bottom left in the newest launcher and click "Keep the Launcher open while games are running" option.
If your game loads up just fine, it is probably just a setting you have on the launcher by default. Go to the launcher settings at the bottom left in the newest launcher and click "Keep the Launcher open while games are running" option.