> https://www.passwordless.dev/

This seems broken in Firefox for me.

e: To be clear, the "⬅ Go ahead... click it." doesn't have anything to the left of it. Refreshing temporarily shows a button that goes away.

I see the same bug.

Also, the word to the right of Passwordless.dev is cropped off, so I see:

    Paswordless.dev        nentation   Get
                                      Started
                                       ->

My browser is half the width of a 1080p screen.

Thanks for this report, probably me who was lazy when setting css breakpoints.

Interesting! I’m using Firefox too, so it’s not a browser issue.

What device are you on? Unfortunately your device seem to not support “platform”-authentication (built in, TPM based)

I test for platform support but mistakenly only hide the test button, not the text queue. Thanks for telling me.

I'm on a Ubuntu 20.04 desktop (custom built) machine.

No TPM - it's a AMD Zen 3 CPU.

I can use YubiKey's WebAuthn demo[1] just fine with my YubiKeys.

[1] https://demo.yubico.com/webauthn-technical/registration

Yep, that checks out. In the demo I’m hiding the button if “platform” authentication is not available.

The API itself work great with yubikeys (“cross-platform”) and I use them myself.

> In the demo I’m hiding the button if “platform” authentication is not available.

Ok, good to know why.

Maybe it might be worthwhile removing that text, or replacing it with a "We'd like to show you, but the demo has requirements that your computer doesn't appear to meet" or something like that. Without that knowledge, it just looks like the site is broken and I have no ability to tell why without digging into JS/whatever.