In the 1490 Live Update, “Finger Tracking Exclusive Mode” is now enabled by default.
However, when it is enabled, users using Contact Glove unable to perform any operations.
Contact Glove is a controller that is designed to use both hand tracking with finger curl and the attached buttons and sticks, but that option only allow hand tracking input.
Not only is this confusing to Contact Glove user, but it also makes it impossible for the user to interact with VRChat because it cannot pinch or do other gesture due to the lack of range of movement. (It only supports finger curls.)
It was disabled by default while OpenBeta, so it seems that no one noticed this problem.