Broken FIDO2/WebAuthn support is stopping me from using Firefox on macOS :(, Any ETA on a fix?

System: MBP 13" Early 2015

Security Key: YubiKey 5 NFC (USB-A)

Authentication and registration works fine with Safari and Chrome, but Firefox just says:

example.org wants to register an account with one of your security keys. You can connect and authorize one now, or cancel.

The security key is obviously connected, but no prompt shows up and touching the key doesn't do anything.

Edit: I used https://webauthn.io/ to test, but the same thing happens on any site where I usually use my security key.

Edit 2: I should mention this is on an (almost) brand new macOS Monterey install and a brand new Firefox install. Though I had the same issue before reinstalling.