What setup are you using? Because I don't have that problem on Linux + Firefox at all
It's totally possible there's something specific about my situation, or the way it was set up in the first place that enables this, idk, but somebody else replied saying they have the same experience so it's not just me.
And even if it was just me, it's still clearly something wrong on the provider's implementation, because it should not be possible for software to sidetrack the user into a passkey enrollment flow, when that user logged in with a passkey to open the current session.
Some probably kinda strong counterevidence to that though is that this doesn't happen on all sites, only Amazon. I've never been prompted to make a new passkey after passkey login on the 12 other sites that I have passkeys in bitwarden for.
It's quite crazy to just surprise a user with a passkey in any event, even if they get saved and don't reprompt you. Suddenly spawning an OS popup without any explanation, which may or may not try to ask for biometrics, is crazy.