Same here. Trying to pair a couple of 8bitdo Pro 2 controllers, a Switch Pro controller, a PS4 Dualshock controller and a PS5 Dualsense controller.
Automatic pairing did not worked with any controller. No notification/message/error is shown to the user, making the process very frustrating.
Manual pairing worked without problems.
Perhaps a list of devices found should be shown to the user.
In my case a ton of bluetooth devices were found. Could this be the culprit of auto pairing not working?