There is something bothers me a lot...
My gamepad is Perfect Choice PC-120391 includes vibration, it's USB Network Joystick Driver, this design looks like Playstation gamepad.
I tried to enable my Gamepad using chrome://flags, but it didn't work and sometimes it says needs to be connected.
I went panel control to test my gamepad it works very well, BUT it didn't work on HTML5 apps.
Do i need report to Chrome and Firefox?