So I'm not sure if I'm the only one still having this issue, but it's still this way where the thread title links don't go back to bold on board main pages after posting in them.
I had brought it up after the server move as well.

Do you have an example of this? Screenshot and is it a single board or all/any? And what browser are you using?

I'm not personally experiencing this issue. When I post, it unbolds. And then someone else posts and I see it bold again.

That's how it is with me. That's what I mean
But before the server move it was different. After, for example, I posted in a thread then it would still be bold. Or just even looking in a thread without posting in it then the thread title link would still be bold. It just kind of bothers me how it is now. Not really a big issue, but yeah.

But it's all boards and I'm using Microsoft Edge.

Have you tried logging out, clearing your cookies, then logging back in?