I tried following the setup described in the WWDC21-10105 video, but the autofill suggestion does not appear above the keyboard as shown at 6:17 in video.
With the same account, password autofill works. I was able to create a setup button to add a TOTP entry to the account. It bounces me to the Password area of Settings, and I can associate the TOTP with my account. But the verification code auto-suggestion does not appear in my app despite adding the UITextContentType.oneTimeCode attribute to my UITextField.
Btw, I was hoping that the setup experience would happen in-app instead of getting bounced to Settings.
I'm noticing also that the video has a text input keyboard, instead of numeric, which is odd because the TOTP input is actually restricted to 6 or 8 digits anyway.