Your desktop is set to focus where mouse cursor is not where you click. Usually ...

		Neikius 14 days ago \| parent \| context \| favorite \| on: Steam on Linux Use Skyrocketed Above 5% in March Your desktop is set to focus where mouse cursor is not where you click. Usually can be changed. Also in conjunction with that the game is set to freeze when it loses focus. So maybe you can change that in game.