hmm I don’t get that, and I do logout and login a lot.
You will, but you probably do not know it because of your firewall rules, that will probably allow all outbound connections to remote port 443.
They are connections made it the background, you will not be physically redirected, as in being sent to another site, it is that your browser will connect to those 3rd party sites without your knowledge.
As a quick example.
I came to the forum, after seeing your post I went to top of forum to log in. On clicking log-in, my browser wanted to connect to daz(to log in) at 220.127.116.11.
Before I was sent and while attempting log in, My browser was being forced to attempt connections to:-
(because the first IP cannot be connected to, a different IP is then attempted, and so on)