WebXR now sends the state of controller buttons and axes as a gamepad attribute for each XR input source:

https://immersive-web.github.io/webxr-gamepads-module/#xrinputsource-interface

Using Gamepad API separately via navigator.getGamepads() or similar is deprecated:

https://immersive-web.github.io/webxr-gamepads-module/#navigator-differences

However, Gamepad instances returned by an XRInputSource's gamepad attribute MUST NOT be included in the array returned by navigator.getGamepads().

AFrame should be updated to use session.inputSources[i].gamepad accordingly.