Does Google Chrome really ignore the autocomplete tag?

I wanted to turn off chrome autocomplete in one of my forms. I have put the code shown in the second answer of this question here

Actually, after entering this code, it only partially fixed my problem. After refreshing the page, the form was not auto-filled. But if I type something into the text box, say username, there was autocomplete showing a list of usernames. What I did was add autocomplete = off

for username textbox, problem resolved. I was happy. But wait a second, everyone was saying that newer versions of chrome completely ignore the autocomplete tag. If so, then how then my problem was solved when I added autocomplete = off

username for the textbox. I am really confused. Any help would be appreciated.

Thanks in advance!