macOS Password app interferes with passkeys

I've been trying to log in to a few websites using Firefox and Safari with a passkey generated in 1Password8, but the Password app keeps interfering with 1Password, making it impossible to log in.

If I cancel this screen and then click on "Use passkey" on 1Password:

I'm redirected to this:

If I try to use my passkey, I get this screen:

There is no way to turn this off and use the passkey I had set up in 1Password. The Password app is forcing me to use my phone, not the TouchID I had on my computer. I'm now stuck in an endless cycle  of trying to log in but being unable to unless I use the Password app, which I don't want to.

If I use my phone to set up the passkey as indicated in the previous screen, I get this on my phone:

When I click Continue, it goes to 1Password, but I can't add a passkey, and the cycle begins again. 

In 1Password, I get the following error under one-time password: "The one-time password URL is incorrect: the scheme is invalid. Check the URL and try again. If you still have trouble, contact support for the site you're trying to add."

Unlike in iOS, there's no way to set up 1Password as the default password manager. I don't know what else to do.

Thanks for any help you can provide.