Yeah some people recently reported the same thing with the plugin through steam input but it was always a bit janky..
If your controller is an xinput or dinput try not launching through steam.
If it's a nintendo controller try using a program such as betterjoy instead of steam input.
If you absolutely need to launch it through steam check if both the game and the plugin have steam input enabled. If they both have try disabling it in the game if they dont try enabling it in both