In Big Picture mode, both the touch controls and my Xbox controller work perfectly. However, as soon as I launch the game, neither input method works — the game does not respond to any controller or touch input at all.

Strangely, I can still bring up the Steam overlay using the controller, and it works fine there, so the inputs are definitely recognized by Steam. It seems like the game itself simply doesn’t detect or respond to any input once it starts.

What could be the problem? How can I fix it?
I want to play games from my PC by streaming them to my phone, but I can’t because the games don’t respond to any input