Bug 176112 – <input> element autocompletes based on placeholder text

• Status: NEW
• Component: DOM

[Monica Dinculescu]

An <input autocomplete="off" placeholder="my favourite email"> will show email suggestions. It seems to look at the placeholder for magic words, and shouldn't, according to the spec: https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofill.

This happens whether the input is outside a form, inside a form, or inside a <form autocomplete=off>.

JSBin: http://jsbin.com/mubaquluka/edit?html,output

[Monica Dinculescu]

(you need to have stuff in your Contacts book and allow autocompleting in Safari for autocomplete to work, btw)

[Monica Dinculescu]

Also, the unofficial workaround is to use homoglyphs, which is sad and scary: https://stackoverflow.com/questions/45461278/safari-autofill-populates-any-field-with-a-placeholder-attribute-containing-the

[Radar WebKit Bug Importer]

<rdar://problem/34168217>

[Christopher Grande]

This continues to be an issue.

Causing all sorts of oddities; for example: 

Safari autocomplete UI appearing over website autocomplete UI. 

Incorrect address book autocomplete, for example a field called "Event Name" triggers Safari to start presenting address book names. 

Incorrect password autocomplete, for example on password input fields being used to enter/obscure API keys or other sensitive but non password information.

The only "fix" are fragile hacks, as mentioned by Monica.