There are some sites that set a session cookie on first visit, and do not change it after successful login, just mark it as "logged in" internally. Autologin currently does not work for such sites (it works but does not detect that it has logged in).
One way to fix is to fist submit invalid credentials, and then try to submit the valid credentials and see if the page changed significantly?
Hm, actually for all websites I've seen with this property so far, there is no login form on the login page after successful login, so it's even easier.
There are some sites that set a session cookie on first visit, and do not change it after successful login, just mark it as "logged in" internally. Autologin currently does not work for such sites (it works but does not detect that it has logged in). One way to fix is to fist submit invalid credentials, and then try to submit the valid credentials and see if the page changed significantly?