Sure. Web version of the game could not be detecting due to focus outside the window. But the game pad also did not work on the windows build as well. Here is a screenshot of my bindings(Custom Ones) for the game pad and it worked on both the web and windows builds of the game. I have highlighted the gamepad mappings. I have tested these on an old school retro gamepad Microsoft Side Winder gamepad USB.
[Note: These use standard custom keymapping rather than the custom dynamic mapping you have created via code, which would be needed for more than one player]
