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Unable to use Fido key for Microsoft Account

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I set up my Fido2 key to work with my Microsoft account on Windows, but when I tried using it on Linux, I noticed that the option to sign in with security key is missing altogether, I tried using Edge and that worked fine, so it should be something regarding Firefox, please advise. I do have security.webauth.webauthn_enable_softtoken set to true and I can log it with it on Yubikey's demo site, so my only guess it Firefox didn't report the flag that's required to log in with security key for Microsoft accounts?

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