If you’re using Windows, then there is a known BW bug/issue at present with Passkeys and the Google logon page with any browser on MS Windows.
Works fine on my Mac and also Raspberry Pi, very convenient, in fact some say a little too convenient.
Thank you for the update. This passkey thing has me concerned. Before you were using a hardware key (w/wo password) for the best security. Now you have hardware key functionality in passkeys. Passkeys are being stored everywhere, iCloud, BW, Googlel account…Hardware keys are in your physical possession…much more secure in my opinion.