I Can't directly access sites with mapped domains directly form the network admin back-end

I Can't directly access sites with mapped domains directly form the network admin back-end (e.g. Sites->All Sites->clicking on site Dashboard ).

I'm being redirected to the login page of that mapped domain

http://mappeddomain.com/wp-login.php?redirect_to=http%3A%2F%2Fmappeddomain.com%2Fwp-admin%2F&reauth=1

i can gain access to Sites with no mapped domain. I believe this started happening after the latest update