How does myth-auth rememeber me work

So, I am a bit confused. I used to know remember me feature to work this way : 

when the user logs in,if he turns on remember me, when he closes the browser, he will not be logged out.But if he turns it off, he will be logged out when he closes the browser

Thats the way, I think myth-auth remember feature works in myth-auth except, no matter what, if I turn off rememeber me from the view, when I close the browser, and re-open it,i am always logged in.I only get logged when my computer shuts down. Even when I set `$allowRemembering = false`, and `$rememberLength the same thing happens.

What is going on.How do I ensure the user gets logged out when they close the browser if they turn off remember me?