I looked into this further and have some updates. It looks like on iOS 18. 5 does not recognize the autocomplete tags properly within ASWebAuthentication and SFSafariViewController. However, if you add to the autocomplete tag in the website "webauthn" (similar to email field on https://account.apple.com/sign-in), the autofill does work. Example: autocomplete="username webauthn" We have added that tag on our site now and I no longer have concerns. Thank you for your help!