I use my Xbox 360 steering wheel and my steering wheel to play farm sim and GRID. It sometimes kicks me out when the games in play or mostly loading anyone know what's happening???
Are you using an unofficial community-built extension in order to use the wheel as an input for Stadia? If so, it's possible that the extension may be interferring in some way. I'd recommend testing with the extension disabled and the controller disconnected to see if the loading problems continue.