After the vrchat skeletal input update, when using hand signs such as Fist or Fingerpoint on the Index controller, the hand sign (gesture parameter) does not switch to Fist or Fingerpoint even if you place your thumb on the trackpad or thumbstick, and you must place your thumb on the ABXY button. Finger Tracking is functioning normally.

These cannot be restored to the behavior before the update, whether you set the binding settings to default or set them custom.