When you're trying to deploy your app to a U.S. Department of Defense environment. This includes things like the Veterans Affairs network of hospitals, too. It's a requirement that your web-app has autocomplete disabled (I don't have the DISA STIG ID# off hand...).

I was faced with this dilemma a few years ago. IIRC, the workaround was sketchy as hell. It was something like creating a password input field with the visibility set to none (and then chrome would autofill it, but it wouldn't be visible), and then the user enters their password into a regular text box, but you style the text box with CSS so that it appears as all discs. ~It was something like that, don't recall exactly.