@Evanski
You don't need to do that, it's just crappy ui
Opening someone in a new tab often opens their profile in this weird public only view that doesn't know you're logged in on you current instance
There's an "advanced timeline" option in settings that makes it tweetdeck-like and seems to have this problem less often
But in non-advanced, I think clicking the name directly to view in same tab gives you a follow-able page
@Evanski If you look at someone's profile on another server and click "Follow", it should ask you for *your own* account on any server.
You don't need an account on the other server to follow someone there.
The only exception is when you own server's admin has banned the whole other server (can be seen in the "About" page of your server)