So far I've been having an interesting issue with Chrome specifically. I'm trying to get rid of autocomplete completely. Dealing specifically with address fields, if I set <input autocomplete="off" ...>, historical addresses are not shown but saved address (what you see in Settings > Autofill > Addresses and more) are shown. If I switch the value of autocomplete to a non-standard value <input autocomplete="field" ..>, Chrome doesn't show saved addresses but goes back to showing historical addresses. Is there a way to hide both autocomplete functionalities?
Edit: This is the exact problem I am facing in this Google groups post.