The issue comes down to how the device interacts with your computer. Just like the original version, the new Steam Controller has no native Windows drivers. This means the hardware relies entirely on the Steam app to function properly. If you do not have the game running via Valve’s storefront app, your shiny new gamepad turns into a useless piece of plastic.
Gamers Nexus also reported this and there are a lot of other news outlets also covering this. It is kinda the same as with the steam deck where I noticed that the inputs just don’t work until steam is launched. I really don’t like that I have to have Steam running for this controller to work. I don’t know if it is a dealbreaker for me, yet, but it really put a damper on my enthusiasm about it



Good i only buy my games on Steam.
Oh yeah right open source games are usually not on Steam.
u can add any executable to steam to use that overlay. this is how i play minecraft on the steamdeck for example.
i wanted to do smth like that cause its convenient having a browser you can pull up from a game,good idea though.
i dont play Minecraft (anymore?,i kinda dont like how Microsoft is controlling on custom servers/your own world, i prefer’s TF2 way of the server owner is responsible.), but i occasionally play Open Source games.